Apparently in his lesser starts he was having problems getting his change up over, and arguably using it too much.
Since less-than- stellar outing against the Tigers he has changed his approach and will be using more heat -- hence last night's result.
75% of the reason I picked him up was his soft schedule. His projected post All-Star starts include 4 games vs. Tigers, 3 vs. Indians, 2 vs. KC, 2Vs. WSox, 1-2 vs. Texas and Baltimore. (I may be off a bit, I'm working from memory)
There are some tough outing in there but no Yankees, Rex Sox or Mariners to face.