There are many who believe that centerfield is the easiest of all three positions to play (ball doesn't slice as funny), assuming you have speed. So, if that's true, then I see no reason why Braun could (eventually) handle CF, after Cameron's departure. The slice might make judging some balls more difficult but on balance, there is no way that CF is the easiest of the 3 outfield position. There's a reason why defensive specialists play in CF and Cust, Dunn and Manny play a corner position. Many of the better defensive corner outfielders can also play a passible CFer (Gross) but that's about it. That said, I think Hart could be an average defensive CFer. He has decent instinct and certainly the speed. Braun hasn't been in the outfield long enough for me to really have an opinion, although you'd think he at least has the raw tools for it.