In 2000, during a game between the Boston Bruins and the Vancouver Canucks, evidently McSorley was displeased with contact he received from Brashear on the other end of the ice.
As the puck went to the other side of the ice, McSorley saw an opening to seek revenge on Brashear before coming off the ice. As Brashear crossed him, McSorley swung deliberately at Brashear's head, connecting with the blade of his stick just below the right eye of Brashear.
Brashear was knocked out cold, and in a great display of the buddy system, the entire Vancouver Canucks team went after McSorley, piling on the ice with McSorley at the bottom.
Brashear suffered a Grade 3 Concussion, and McSorley was charged with assault. McSorley was convicted and sentenced to 18 months probation. It was the first criminal charge for an on-ice act in the NHL since 1988.