Leake has gone in the tank for most of the last two months. It's Posey's award to lose at this point.
He is still 8-4 with a 3.78 ERA. His WHIP is high at 1.43 and he only has 86 Ks in 135.2 innings pitched, but that is still very impressive for a rookie (especially one that spent no time whatsoever in the minors).