J.A. Happ of the Toronto Blue Jays
When Desmond Jennings released that ball, he had no intentions of hurting anybody, but the inevitable happened and J.A. Happ collapsed on the ground after several seconds of bracing his head. Blood was coming out from his left ear. Aside from a fractured skull, J.A. Happ sprained his PCL and MCL the moment he dropped to the ground. But that’s not the worst part because J. A. Happ’s knee injury was the nastiest.
