Hi, I have decided to make a thread for you to vote for who you think has the most fierce football rivalry. Many of the rivalries I put on the poll you will not know about so I will give descriptions under each of the matches I choose, and in advance sorry for any I have missed out 
I CANNOT EDIT THE POLL!
Boca Juniors V River Plate (Superclasico)
These two teams from Buenos Aires, Argentina are the protagonists of what is known as, Superclásico (Superderby Spanish, clásico –meaning classic– is the word used instead of derby in Argentina). Boca Juniors is traditionally regarded as the club of Argentina's working class, in contrast with the supposedly more upper-class support base of cross-town Atlético River Plate.
Known worldwide for the passion of the fans, the stands of both teams are loaded with passionate songs (often based on popular Argentine rock band tunes) against their rivals, fireworks, flags and rolls of paper. Sometimes ending in riots between the hardest supporters of both sides or against the police.
America V Guadalajara (El Clasico)
A long-standing rivalry between the teams of two of the most important cities in Mexico: Chivas of Guadalajara and América of Mexico City. Chivas is known for a long-standing tradition of fielding only Mexican-born players, contrasting with América, which typically hires famous foreigners. América is owned by Televisa, the main communications company in Mexico, and thus have a huge fan base in the whole country although Guadalajara also have a larger supporter base nationwide (and is owned by Jorge Vergara, through his company Omnilife).
This match is sometimes seen as the match of the 'capitalinos', the inhabitants of Mexico City, versus the 'provincianos', the people from the rest of the country.<SUP> </SUP>Both teams have been very successful, with Guadalajara having won 11 championships, and America 10.
Crvena Zvezda V Partizan (Eternal Derby)
FK Partizan was founded in 1945 as the football section of the central club of the Yugoslavian Army. Red Star was founded in 1945 as well but it was more the civil club but with close ties with the Ministry of Interior at its beginning. The rivalry between the two clubs is known to be pretty fierce and violent.
Red star fans are called Delije (Warriors, Heroes) and FK Partizan fans are called Grobari (Undertakers, Gravediggers) This rivalry between both sides is regarded as the most dangerous because of violent actions between the hooligans, many people have been extremely hurt in the fights these teams had. There were many cases of off-stadium deaths in clashes between supporters of these teams, as well as one case of on-stadium killing, when in 1999. Grobari, using handy rocket-launcher, killed a supporter of Red Star by sending missile from south tribune to north one, where Delije are traditionally stationed.Delije many times killed some members of Grobari with knives, too.
CSKA Moscow V Spartak Moscow
The Moscow derby is fierce, but the rivalry is strange in that it denies even notional logic. CSKA were the army team, Spartak were financed by a catering firm and, to romanticised modern theory, were supported by those looking for an independent alternative to the monolithic state institutions.
The supporters of both teams wait the whole year for this particular match. Both clubs are based in the Luzhniki stadium (sector D belongs to CSKA fans and B to Spartak) , but both teams are building their own stadiums. This game attracts crowds of people(about 60 thousands every game). The rivalry doesn't just occur when the teams are playing each other, with both teams having terrace chants which they sing at each game insulting each other.
On 14 October 1995 on Old Arbate street in Moscow about 200 fans of CSKA and Spartak started a fight . This slaughter became a symbol of the beginning of an epoch of severe opposition among football fans of Russia.
Dinamo Bucharest V Steaua Bucharest (Eternal Derby)
Marele Derby (The Great Derby) has been the leading Romanian football encounter in the last 60 years, as Steaua and Dinamo are the two most successful football teams in the country in history. It is also a match between the former clubs of the Ministry of National Defence - Romanian Army (Steaua) and the Ministry of Internal Affairs - The Police (Dinamo). Several clashes between different factions of supporters have often occurred and still occur inside and outside the stadium. The heyday was reached before a match kick-off in 1997, when Dinamo's fans set a sector of Stadionul Ghencea's Peluza Sud, where they were assigned, on fire. Between October 1991 and April 2000, Steaua counted 19 undefeated official matches in front of their rivals, both in the championship and the cup. Just as well, a period of 17 years and 7 months has been recorded in which Dinamo did not manage to win away against Steaua in the domestic league.The roots of the Dinamo ultras movement can be found in 1995 when groups like Dracula or Rams Pantelimon appear in the North End. In 1996 a group called Nuova Guardia is born, composed of young but very devoted men it will become the leading group in the red-white stands.
Fenerbahce V Galatasaray
This is the clash of Turkey's teams; Fenerbahçe S.K. and Galatasaray S.K.. For some fans, winning the derby is more important than winning the league. Fenerbahçe has a winning streak at home in the Turkish Superlig against Galatasaray since 1999. In the most recent game, Fenerbahçe won against Galatasaray by 3-1 on October 25<SUP>th</SUP> 2009.
The fans of the two teams used to be split along class lines, with Fenerbahçe supported primarily by the working class and Galatasaray, - who were founded by Galatasaray Lycee students - with more aristocratic supporters. There is also a geographical split because Galatasaray is located in the European side of Istanbul, whereas Fenerbahçe is located on the Asian side. Fenerbahçe and Galatasaray fans react in the same way in another issue meaning that they don't like the other side because they are of Fenerbahçe or Galatasaray. In National Professional Leagues after 1959, both Fenerbahçe and Galatasaray have won 17 first league titles.
Internazionale V AC Milan (Derby Della Madonnina)
Derby della Madonnina, or the Milan Derby as it is sometimes known, is a football match between the Italian clubs A.C. Milan and F.C. Internazionale Milano (Inter). It is usually a semiannual fixture in the Italian football league Serie A; however, the derby has also taken place in the Coppa Italia and the UEFA Champions League. It is called "Derby della Madonnina" in honour of one of the main sights of the city of Milan, the statue of the virgin Mary on the top of the Duomo, which is usually called "Madonnina".
The most infamous of the derby matches between AC Milan and Inter was the second leg of the Champions' League quarterfinal on 12 April 2005. The game was abandoned after AC Milan goal keeper Dida was hit by a flare.
Lazio V Roma (Derby Della Capitale)
The Derby della Capitale, known in English as the Rome Derby, is a biannual yearly football match between Lazio and Roma in the Stadio Olimpico. It is considered to be the greatest Derby in Italy and one of the greatest in the world.
As both sides are based in the Stadio Olimpico, home advantage is more limited than in other fixtures and this has led to the traditional battles between the Lazio ultras in Curva Nord and the Roma ultras in Curva Sud. Violence breaks out occasionally and, in 1979, Vincenzo Paparelli, a Lazio fan in the Curva Nord, was killed when hit by a shipping flare fired across the ground by a Roma fan. Paparelli has become a symbol of the Lazio fans' passion for this Derby.
The Derby della Capitale, known in English as the Rome Derby, is a biannual yearly football match between Lazio and Roma in the Stadio Olimpico. It is considered to be the greatest Derby in Italy and one of the greatest in the world
As both sides are based in the Stadio Olimpico, home advantage is more limited than in other fixtures and this has led to the traditional battles between the Lazio ultras in Curva Nord and the Roma ultras in Curva Sud.Violence breaks out occasionally and, in 1979, Vincenzo Paparelli, a Lazio fan in the Curva Nord, was killed when hit by a shipping flare fired across the ground by a Roma fan.
Barcelona V Real Madrid (El Clasico)
The rivalry between FC Barcelona and Real Madrid in Spain is generally considered to be the biggest in football, and is similar in context to Celtic - Rangers. From the start the clubs were seen as representatives of two rival regions in Spain, Catalonia and Castile respectively, as well as the two cities themselves.
In the 1950s, the rivalry was intensified further when the clubs disputed the signing of Alfredo Di Stéfano, who finally played for Real Madrid and was key in the subsequent success achieved by the club.
As Barcelona and Real Madrid are the two biggest and most successful clubs in Spain, the rivalry impacts the league championship on an almost annual basis. The flashpoints of this rivalry are the twice-a-season clásicos which draw vast audiences from around the world. Real has won more La Liga and Champions League titles than Barça, but Barça has won more Spanish Cups, Cup Winners Cups and UEFA Cups.
Celtic V Rangers (Old Firm Derby)
the Old Firm derby between Scottish teams Celtic and Rangers is more than a football match - it pits religion, politics and opposing social attitudes against each other. Both clubs play in Glasgow, Scotland and the match is one of the oldest derbies in the world, dating back to 1888. The Old Firm derby is also one of the most contested matches in the world, with over 370 games having been played. The matches are played at either Ibrox Stadium with 51,000 fans or Celtic Park in front of 60,000
This rivalry is considered by many to be one of the most fervent in the world, with amazing atmospheres and loud chanting, it is easy to understand why it is. Millions tune in to the Old Firm derby across the globe. Rangers are considered a Protestant club with Unionist and loyalist supporters, while Celtic are considered a Catholic club with Republican and Nationalist supporters. It has long had connections with the political conflict in Norther Ireland, with thousands of fans from Northern Ireland and the Republic of Ireland making the trip to Scotland for these matches
In 1980, around 9,000 fans fought an on-pitch battle in the aftermath of Celtic's 1-0 victory in the Scottish Cup Final at Hampden. This remains the worst invasion onto a football pitch ever reported. The Old Firm rivalry fuels many assaults and many deaths on Old Firm Derby days.
Liverpool V Manchester United
Being the two most successful teams in English football history, Liverpool and Manchester United from the north west of England are rivals for trophies. The biannual league matches are considered by some critics to be the biggest games of the season.
Liverpool and United both have a wide fan base from all over the world, which probably contributes to this rivalry being seen as more important than either team's traditional rivalry with local teams Everton and Manchester City. Many consider it to be the biggest Football rivalry in the world. However, as well as Football; it is a rivalry between two cities, only 30 miles apart. This began when Manchester built a ship canal, which enabled them to by-pass the River Mersey. The consequence of this was many Liverpudlian Dockers lost their jobs - this caused great resentment and anger.
The two clubs have developed a vicious hatred of each other, fuelled by incidents of hooliganism in the 1980s and 1990s. Also, by the singing of spiteful, even sickening songs targeting the two clubs' respective sore points, the Munich and Hillsborough disasters. Liverpool's hooligan firm is called 'The Urchins' and they frequently clashed with Manchester United's 'Red Army' and still do to this day. In this hateful atmosphere, boiling point is often reached with the authorities having to work very hard to avoid major confrontation. Every League game between the two clubs kicks off very early, this minimises the risk of violence but because of the fierce loathing the two sets of supporters have for each other, the danger remains. Both sets of players receive terrible verbal and sometimes even physical abuse during these intense fixtures.
Millwall V West Ham (East London Derby)
The rivalry between Millwall and West Ham is definitely one of the most bitter rivalries in England and possibly one of the most fierce in the world, even though they have only met a handful of times. There is evidence to show that the rivalry began when there was a strike by the predominantly West Ham supporting ship works, whereas the Millwall supporting workers refused to join the strike. However, this rivalry has been lessened some due to the fact that both clubs have played in different divisions for much of their history. On 25 August 2009, the two sides met in a Carling Cup clash, which was marred by major riots inside and outside the ground which shocked the country and it was seen by many as what the 1970s and early 1980s were like for football hooliganism, and the fighting is always so intense it is almost always described as "animal fighting". Hundreds of West Ham supporters invaded the pitch after each of their three goals in their extra time win, and a minority of these fans threatened some Millwall players. Outside the ground, a Millwall fan was stabbed during the game. Before this occurrence, there was serious violence during Millwall's 4-1 victory at the New Den in 2004, the first time the sides had met in over 10 years. Although the violence in the ground was mostly West Ham supporters fighting with police, through frustration, during the game, but several clashed between the supporters erupted in near-by areas. Some suggest that the violence is so fierce, even today, because the clubs have not played each other as often as other rival clubs such as Manchester United and Manchester City. Because of the such fierce rivalry, Harry Redknapp, a former West Ham player and manager, called for the two clubs to never be allowed to play each other in a cup game again, stating if they get drawn together, the balls should be put back in drawn again.
Sorry if this is a bit long or whatever, most of it is copied from Wikipedia however I have put small bits in myself. Again I apologise for missing derbies, I know I have missed the Lisbon derby, the big Tel Aviv derby, the Ajax Feyernood derby and many more. Oh and sorry if this is a bit long/wordy but it is good if anyone wants to know more about some of the worlds major rivalries. I voted for the Old Firm derby.
I CANNOT EDIT THE POLL!
Boca Juniors V River Plate (Superclasico)
These two teams from Buenos Aires, Argentina are the protagonists of what is known as, Superclásico (Superderby Spanish, clásico –meaning classic– is the word used instead of derby in Argentina). Boca Juniors is traditionally regarded as the club of Argentina's working class, in contrast with the supposedly more upper-class support base of cross-town Atlético River Plate.
Known worldwide for the passion of the fans, the stands of both teams are loaded with passionate songs (often based on popular Argentine rock band tunes) against their rivals, fireworks, flags and rolls of paper. Sometimes ending in riots between the hardest supporters of both sides or against the police.
America V Guadalajara (El Clasico)
A long-standing rivalry between the teams of two of the most important cities in Mexico: Chivas of Guadalajara and América of Mexico City. Chivas is known for a long-standing tradition of fielding only Mexican-born players, contrasting with América, which typically hires famous foreigners. América is owned by Televisa, the main communications company in Mexico, and thus have a huge fan base in the whole country although Guadalajara also have a larger supporter base nationwide (and is owned by Jorge Vergara, through his company Omnilife).
This match is sometimes seen as the match of the 'capitalinos', the inhabitants of Mexico City, versus the 'provincianos', the people from the rest of the country.<SUP> </SUP>Both teams have been very successful, with Guadalajara having won 11 championships, and America 10.
Crvena Zvezda V Partizan (Eternal Derby)
FK Partizan was founded in 1945 as the football section of the central club of the Yugoslavian Army. Red Star was founded in 1945 as well but it was more the civil club but with close ties with the Ministry of Interior at its beginning. The rivalry between the two clubs is known to be pretty fierce and violent.
Red star fans are called Delije (Warriors, Heroes) and FK Partizan fans are called Grobari (Undertakers, Gravediggers) This rivalry between both sides is regarded as the most dangerous because of violent actions between the hooligans, many people have been extremely hurt in the fights these teams had. There were many cases of off-stadium deaths in clashes between supporters of these teams, as well as one case of on-stadium killing, when in 1999. Grobari, using handy rocket-launcher, killed a supporter of Red Star by sending missile from south tribune to north one, where Delije are traditionally stationed.Delije many times killed some members of Grobari with knives, too.
CSKA Moscow V Spartak Moscow
The Moscow derby is fierce, but the rivalry is strange in that it denies even notional logic. CSKA were the army team, Spartak were financed by a catering firm and, to romanticised modern theory, were supported by those looking for an independent alternative to the monolithic state institutions.
The supporters of both teams wait the whole year for this particular match. Both clubs are based in the Luzhniki stadium (sector D belongs to CSKA fans and B to Spartak) , but both teams are building their own stadiums. This game attracts crowds of people(about 60 thousands every game). The rivalry doesn't just occur when the teams are playing each other, with both teams having terrace chants which they sing at each game insulting each other.
On 14 October 1995 on Old Arbate street in Moscow about 200 fans of CSKA and Spartak started a fight . This slaughter became a symbol of the beginning of an epoch of severe opposition among football fans of Russia.
Dinamo Bucharest V Steaua Bucharest (Eternal Derby)
Marele Derby (The Great Derby) has been the leading Romanian football encounter in the last 60 years, as Steaua and Dinamo are the two most successful football teams in the country in history. It is also a match between the former clubs of the Ministry of National Defence - Romanian Army (Steaua) and the Ministry of Internal Affairs - The Police (Dinamo). Several clashes between different factions of supporters have often occurred and still occur inside and outside the stadium. The heyday was reached before a match kick-off in 1997, when Dinamo's fans set a sector of Stadionul Ghencea's Peluza Sud, where they were assigned, on fire. Between October 1991 and April 2000, Steaua counted 19 undefeated official matches in front of their rivals, both in the championship and the cup. Just as well, a period of 17 years and 7 months has been recorded in which Dinamo did not manage to win away against Steaua in the domestic league.The roots of the Dinamo ultras movement can be found in 1995 when groups like Dracula or Rams Pantelimon appear in the North End. In 1996 a group called Nuova Guardia is born, composed of young but very devoted men it will become the leading group in the red-white stands.
Fenerbahce V Galatasaray
This is the clash of Turkey's teams; Fenerbahçe S.K. and Galatasaray S.K.. For some fans, winning the derby is more important than winning the league. Fenerbahçe has a winning streak at home in the Turkish Superlig against Galatasaray since 1999. In the most recent game, Fenerbahçe won against Galatasaray by 3-1 on October 25<SUP>th</SUP> 2009.
The fans of the two teams used to be split along class lines, with Fenerbahçe supported primarily by the working class and Galatasaray, - who were founded by Galatasaray Lycee students - with more aristocratic supporters. There is also a geographical split because Galatasaray is located in the European side of Istanbul, whereas Fenerbahçe is located on the Asian side. Fenerbahçe and Galatasaray fans react in the same way in another issue meaning that they don't like the other side because they are of Fenerbahçe or Galatasaray. In National Professional Leagues after 1959, both Fenerbahçe and Galatasaray have won 17 first league titles.
Internazionale V AC Milan (Derby Della Madonnina)
Derby della Madonnina, or the Milan Derby as it is sometimes known, is a football match between the Italian clubs A.C. Milan and F.C. Internazionale Milano (Inter). It is usually a semiannual fixture in the Italian football league Serie A; however, the derby has also taken place in the Coppa Italia and the UEFA Champions League. It is called "Derby della Madonnina" in honour of one of the main sights of the city of Milan, the statue of the virgin Mary on the top of the Duomo, which is usually called "Madonnina".
The most infamous of the derby matches between AC Milan and Inter was the second leg of the Champions' League quarterfinal on 12 April 2005. The game was abandoned after AC Milan goal keeper Dida was hit by a flare.
Lazio V Roma (Derby Della Capitale)
The Derby della Capitale, known in English as the Rome Derby, is a biannual yearly football match between Lazio and Roma in the Stadio Olimpico. It is considered to be the greatest Derby in Italy and one of the greatest in the world.
As both sides are based in the Stadio Olimpico, home advantage is more limited than in other fixtures and this has led to the traditional battles between the Lazio ultras in Curva Nord and the Roma ultras in Curva Sud. Violence breaks out occasionally and, in 1979, Vincenzo Paparelli, a Lazio fan in the Curva Nord, was killed when hit by a shipping flare fired across the ground by a Roma fan. Paparelli has become a symbol of the Lazio fans' passion for this Derby.
The Derby della Capitale, known in English as the Rome Derby, is a biannual yearly football match between Lazio and Roma in the Stadio Olimpico. It is considered to be the greatest Derby in Italy and one of the greatest in the world
As both sides are based in the Stadio Olimpico, home advantage is more limited than in other fixtures and this has led to the traditional battles between the Lazio ultras in Curva Nord and the Roma ultras in Curva Sud.Violence breaks out occasionally and, in 1979, Vincenzo Paparelli, a Lazio fan in the Curva Nord, was killed when hit by a shipping flare fired across the ground by a Roma fan.
Barcelona V Real Madrid (El Clasico)
The rivalry between FC Barcelona and Real Madrid in Spain is generally considered to be the biggest in football, and is similar in context to Celtic - Rangers. From the start the clubs were seen as representatives of two rival regions in Spain, Catalonia and Castile respectively, as well as the two cities themselves.
In the 1950s, the rivalry was intensified further when the clubs disputed the signing of Alfredo Di Stéfano, who finally played for Real Madrid and was key in the subsequent success achieved by the club.
As Barcelona and Real Madrid are the two biggest and most successful clubs in Spain, the rivalry impacts the league championship on an almost annual basis. The flashpoints of this rivalry are the twice-a-season clásicos which draw vast audiences from around the world. Real has won more La Liga and Champions League titles than Barça, but Barça has won more Spanish Cups, Cup Winners Cups and UEFA Cups.
Celtic V Rangers (Old Firm Derby)
the Old Firm derby between Scottish teams Celtic and Rangers is more than a football match - it pits religion, politics and opposing social attitudes against each other. Both clubs play in Glasgow, Scotland and the match is one of the oldest derbies in the world, dating back to 1888. The Old Firm derby is also one of the most contested matches in the world, with over 370 games having been played. The matches are played at either Ibrox Stadium with 51,000 fans or Celtic Park in front of 60,000
This rivalry is considered by many to be one of the most fervent in the world, with amazing atmospheres and loud chanting, it is easy to understand why it is. Millions tune in to the Old Firm derby across the globe. Rangers are considered a Protestant club with Unionist and loyalist supporters, while Celtic are considered a Catholic club with Republican and Nationalist supporters. It has long had connections with the political conflict in Norther Ireland, with thousands of fans from Northern Ireland and the Republic of Ireland making the trip to Scotland for these matches
In 1980, around 9,000 fans fought an on-pitch battle in the aftermath of Celtic's 1-0 victory in the Scottish Cup Final at Hampden. This remains the worst invasion onto a football pitch ever reported. The Old Firm rivalry fuels many assaults and many deaths on Old Firm Derby days.
Liverpool V Manchester United
Being the two most successful teams in English football history, Liverpool and Manchester United from the north west of England are rivals for trophies. The biannual league matches are considered by some critics to be the biggest games of the season.
Liverpool and United both have a wide fan base from all over the world, which probably contributes to this rivalry being seen as more important than either team's traditional rivalry with local teams Everton and Manchester City. Many consider it to be the biggest Football rivalry in the world. However, as well as Football; it is a rivalry between two cities, only 30 miles apart. This began when Manchester built a ship canal, which enabled them to by-pass the River Mersey. The consequence of this was many Liverpudlian Dockers lost their jobs - this caused great resentment and anger.
The two clubs have developed a vicious hatred of each other, fuelled by incidents of hooliganism in the 1980s and 1990s. Also, by the singing of spiteful, even sickening songs targeting the two clubs' respective sore points, the Munich and Hillsborough disasters. Liverpool's hooligan firm is called 'The Urchins' and they frequently clashed with Manchester United's 'Red Army' and still do to this day. In this hateful atmosphere, boiling point is often reached with the authorities having to work very hard to avoid major confrontation. Every League game between the two clubs kicks off very early, this minimises the risk of violence but because of the fierce loathing the two sets of supporters have for each other, the danger remains. Both sets of players receive terrible verbal and sometimes even physical abuse during these intense fixtures.
Millwall V West Ham (East London Derby)
The rivalry between Millwall and West Ham is definitely one of the most bitter rivalries in England and possibly one of the most fierce in the world, even though they have only met a handful of times. There is evidence to show that the rivalry began when there was a strike by the predominantly West Ham supporting ship works, whereas the Millwall supporting workers refused to join the strike. However, this rivalry has been lessened some due to the fact that both clubs have played in different divisions for much of their history. On 25 August 2009, the two sides met in a Carling Cup clash, which was marred by major riots inside and outside the ground which shocked the country and it was seen by many as what the 1970s and early 1980s were like for football hooliganism, and the fighting is always so intense it is almost always described as "animal fighting". Hundreds of West Ham supporters invaded the pitch after each of their three goals in their extra time win, and a minority of these fans threatened some Millwall players. Outside the ground, a Millwall fan was stabbed during the game. Before this occurrence, there was serious violence during Millwall's 4-1 victory at the New Den in 2004, the first time the sides had met in over 10 years. Although the violence in the ground was mostly West Ham supporters fighting with police, through frustration, during the game, but several clashed between the supporters erupted in near-by areas. Some suggest that the violence is so fierce, even today, because the clubs have not played each other as often as other rival clubs such as Manchester United and Manchester City. Because of the such fierce rivalry, Harry Redknapp, a former West Ham player and manager, called for the two clubs to never be allowed to play each other in a cup game again, stating if they get drawn together, the balls should be put back in drawn again.
Sorry if this is a bit long or whatever, most of it is copied from Wikipedia however I have put small bits in myself. Again I apologise for missing derbies, I know I have missed the Lisbon derby, the big Tel Aviv derby, the Ajax Feyernood derby and many more. Oh and sorry if this is a bit long/wordy but it is good if anyone wants to know more about some of the worlds major rivalries. I voted for the Old Firm derby.
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