Beşiktaş–Galatasaray is a Turkish football rivalry involving two of the most successful clubs in the Süper Lig.Galatasaray marked their first victory over Beşiktaş when they defeated them 6–1 in semi-final of the Istanbul Football League on 31 July 1925.Beşiktaş and Galatasaray are two of the most popular Turkish clubs; both sides have large fanbases that follow them in domestic and international matches.Football hooliganism is a very common phenomenon between their fans in recent years, featuring anything from breaking seats, cursing, fighting, fireworks and street rioting.Both clubs naturally draw the majority of their support from the side of the city that they are native to, but maintain a significant majority of support drawn from the rest of Turkey.