Porcello was also really good in the 2nd half of 2015. I wouldn't worried unless he starts to walk and shows nothing. Right now it's inconsistent command. He wasn't great in early 2016 either. The shrunken strike zone affects his inside pitches. He is not getting those close calls as often. It also a case they never score when Porcello pitches. Every time he has to be under pressure for no less than perfection.