I'm a little unnerved by Zack Greinke's injury. Baseball fights are usually more swagger than danger - it's more like a testosterone joust than serious combat. If I was worth a staggering amount of money playing baseball, I sure as hell would not risk an injury by getting into a fight. Almost any injury can end a professional career. How many knuckle-ball pitcher emerged out of a arm or wrist injury? Definitely not worth a broken collar bone to win a fight.