IMHO, this is the one thing that gives him a fighting chance in the majors. I would imagine this is also part of why his raw power translates into game power. It is my recollection that, despite Michael Restovich's 'light-tower power', the knock on him was that he had a "slider speed" bat. This is fairly common amongst minor-league sluggers, and would seem to be an even worse prognostic indicator for a significant MLB career than low W/SO rate. Now, they do say that Walker's swing can get long at times, so he might still be vulnerable to MLB pitchers who can hit spots with 93-95 mph FBs, but that's like saying a player has trouble hitting a good slider (i.e. who doesn't!).