1
Going back and looking at his splits, he has never had less than 10.0 K/9 as a reliever since he signed. It's fair to think that he will settle back around 10 after this hot streak. Problem is he has never had less than 4.5 BB/9 and the trend has been in the wrong direction (5+ in 08; 7+ last year; 8+ so far this year).
According to scouting, he has mid-90s velocity and a good curve. He just goes through serious stretches when he can't get them over the plate. I assume MLB hitters will know when to lay off, so that has to temper the enthusiasm quite a bit.