A Brazilian defender was sent off during a league fixture on Monday night after headbutting and throwing punches at his own teammate.
Galatasaray's first game of the 2021/22 Super Lig campaign against Giresunspor descended into chaos when their centre-back Marcao was shown a straight red for attempting to fight with teammate Kerem Akturkoglu.
According to GiveMeSport, Akturkoglu appeared to shush his teammate after a verbal spat between the pair, with Marcao seemingly losing his temper and running almost 50 meters to respond by headbutting his colleague before proceeding to throw punches at him.
Teammates quickly pulled the duo apart and the incident was immediately referred to the video assistant referee, with match official Erkan Ozdamar deciding to send the 25-year-old defender off a few minutes later.
Akturkoglu has reportedly told his manager Fatih Terim that he had only asked the defender to "shut up" before the shocking incident occurred.
Despite going down to 10 men, Galatasaray still won the match 2-0. As for Marcao, it remains unclear when he will return to the pitch and no disciplinary action has been announced yet, but a suspension is expected.
Scroll through the gallery below to see 10 other bust-ups between teammates over the years