More people then just Tyler Colvin have been injured from Maple bat breaks, this has just been the most serious, since about 2007 there have been debates about MLB banning the wood because of the danger it not only poses to the players but to the fans in the stands as well. Players just started using maple bats in 2001 when Barry Bonds started using one, and there's no data that shows they hit any better then bats made of ash. Just this year MLB put restrictions on certain types of maple wood used to make the bats because of the splintering problem, I'm just saying get rid of them all together before someone dies, the one that hit Colvin today was just inches from his heart.