John Maine. 1.35 ERA and a 4-0 record. He's been pretty dominant with a pretty good K rate, and consistently going 7+ IP in each start but one.
Honorable Mention: Mark Hendrickson. Leads the Major Leagues with a 1.30 ERA (min 20 IP) and he had a 0.69 WHIP before todays start. The whip might have gone down already as he allowed only 3 hits and 1 walk (and 7 K's) but the stats havent been updated yet.
Who woulda thought these two clowns would be doing so well?