How about they just play the damn game and not deliberately try to injure each other? I don't buy tickets to watch umpires come center stage, and I don't buy tickets to watch grumpy men express their false machismo. Most of all, I don't buy "rules" that are so shameful that brave men are too chicken to write them down on paper.
I believe in specialties and division of labor. Let boxers and MMA guys punch and kick each other for money. Baseball players are supposed to play baseball, period. We don't need them to remind us of the good old days of barbaric social ineptitude.