#8 David Batty and Graeme Le Saux
While these 2 players had a less than exemplary career, they make this list because it was one of those very rare occasions where 2 players from the same team ended up fighting with one another.
(Video Courtesy: Aleks Chistogan YouTube Channel)
In 1995, the landscape of English football was quite different. Blackburn Rovers were the current holders of the league and in the Champions League they lined up against Spartak Moscow. 4 minutes into the game in Russia, Batty gained possession in midfield but Le Saux tried to take the ball off him, clattering into his teammate and giving away a throw-in to Spartak.
Batty was furious and ran over to the defender to give him an earful, and Le Saux responded by punching him in the throat. What made it more incredulous was that Le Saux broke his hand in the attack, with their skipper Tim Sherwood having to calm things down.