 However, his chances of becoming a prominent National Hockey League player were severed after a serious arm injury in January 1995 at Winnipeg, when involved in a fight with another player, Keith Tkachuk.The tendons in McSween's left wrist were severely damaged after being severed by Tkachuk's skate.The nerve and tendon injury never fully healed, preventing him from being able to fully close his left hand, his shooting arm, effectively ending McSween's professional career.