I don't think so, unless you are a fantasy owner. Aside from one season, he never stole bases with great efficiency, and his OBP isn't really high enough to make it an issue anyway. He is still fast enough to leg out a lot of doubles, and his XBH are his main asset. If his bat speed goes, that's an issue. I'm much more concerned with what it does to his defense. Great range in left was a major part of his value. He never ever ever had great range in left. Despite his speed, he gets terrible reads on balls out there But great speed can help recover from bad jumps (not negate it, but it helps). Less speed and bad jumps = worse defense. True enough, I was just disputing the notion that he ever had "great range" As a side note, will anyone be surprised if he keeps his idiotic little hop out there?