I stopped by fellow SweetSpot blog Fungoes, which covers the St. Louis Cardinals, and had an “aha!” moment. The author, Pip, posted a graph that explains as much in one glance as an entire article of explanation. So, with all due credit to Pip, I’d like to adapt the idea for Phillies pitchers. I have made one minor adjustment: instead of using xFIP, I used SIERA. Additionally, I included each pitcher’s ERA.
Yes, Jose Contreras does have a negative SIERA. He has pitched extremely well, striking out 11 of the 20 hitters he has faced and inducing five ground balls of the nine put in play.
I think this is a good snapshot of the Phillies’ pitching staff, giving one the ability to discern which pitchers are likely to improve and which are likely to hit the skids.