[3] In 2006, Henhawk took part in the National Lacrosse League playing for Toronto Rock.
During the game Henhawk injured his left leg in fight for loose ball and was removed with an ambulance.
[4] In his nine-season Jason competed with Buffalo, Montreal, Albany, Toronto and Columbus, the 6–0, 215-pound forward scored seven goals and added five 12 point assists.
Henhawk faced less success during his first year, getting four goals and one assist, in 1998, in the league with the Buffalo Bandits.
Henhawk performed his Junior "A" lacrosse with the Six Nations Arrows and was honored with the Jack Bionda Memorial Award.