Not to be Picky but, Horace Broadnax was one of the Dirtiest Players on a Team filled with Dirty Players! G'town was a much more despised team under JT2, than they are under JT3.
I remember Kevin Williams having a Showdown with Ewing during a Game at the Garden. Kevin didn't back down.
Michael Graham was possibly the worst thug on those teams.
Think you can delete the qualifying "possibly."
Perry McDonald, Horace Broadnax, Gene Smith, Patrick Ewing (elbows) were all dirty but none came anywhere near to being as bad as Graham.
Ralph Dalton, Ewing's backup, worked (at least he did) in the area. He use to come to all of the GTown games at MSG. I don't think I've seen him recently though. I ran into him on vacation one year. He and his family were staying at the same resort I was. I introduced myself and we had a nice long discussion over the rivalry back when he played.
David Russell and Billy Martin use to go at it back in the day. Story goes that during the game in the 82/83 season, (the game Kevin Williams went after Ewing), Russell promised he was going to get him (dunk on him). Martin told him it would be the other way around. Russell prediction was correct and added a 360 dunk near the end of the game.