The 2010 NL Rookie of the Year played in just 45 games last season because, and solely because, he is a catcher.
On a sac fly in the 12th inning of a late May game, Florida's Scott Cousins flung himself like a battering ram, bending Buster Posey over backwards and tearing three ankle ligaments and fracturing a fibula. Giants GM Brian Sabean called it "malicious," saying that if Cousins "never plays another game in the big leagues, I think we'll all be happy." Yes, on repeated viewings of the replay, Cousins probably could have gotten in on a hook slide, but in real time the decision was instantaneous and instinctual, and the next time there's a bang-bang play at the plate in a Giants game, the baserunner isn't going to stop to consider Posey's injury history. He's a catcher, and he's armored, and he's going to get steamrolled.