With Peralta, the issue seems to me like his command just comes and goes without warning, which, to be honest, is somewhat to be expected with a young pitcher. Right now his biggest problem is he's either got it or he doesn't for the most part, so when he loses it, he gives up most of his hits and walks in a big inning, but then can turn around and put up 3 to 4 Os after. Most of our middle relievers are somewhat similar, really, they come in and get the outs, or they come in and get shelled is what it seems like.