Greg is a below-knee amputee. Total or partial limb amputations occur because the affected limb is no longer functional, due to impairment caused by trauma, disease, infection or defect at birth. The level of amputation will depend on the location and severity of impairment. Most amputees can be fitted with a prosthetic leg, knee or ankle, placed over the remaining part of the amputated limb, known as the "stump".
According to Teammate Jean Labonté
“Claude Lemieux has scored some big goals in his career, so has Greg Westlake. In the small world of sledge hockey, Greg is well known for getting under the opponent's skin during a game. But he is an extremely gifted forward with a knack for scoring the important goal. A true clutch player.”