2.
Leigh Matthews / Don Scott
Despite winning three premierships together during the 1970's, Matthews and Scott were not friends. During their decade of playing together they only spoke once and came into contact during a trial game. The fight started when Matthews tried to sling tackle Scott, however he quickly retaliated. Matthews then tried to elbow Scott but he quickly moved away. While there were no more blows between the two, it was accepted that they were not going to get along.
Whilst the Carey / Stevens situation was ugly and involved the AFL’s highest profile player it occurred in the off-season and the 2 never played for the same team again so it was hardly a long running feud within the confines of the club. i’m surprised you never included the likes of Andrew McLeod / Tyson Edwards and Gary / Steven Hocking. Both combinations played 200+ games in the same team and rarely spoke to each other and had major personal disagreements with each other.