Cole Hamels has not looked like himself this year. After ERAs of 3.06, 2.79, and 3.05 from 2010 through 2012, Hamels now has a 4.61 ERA nine starts into this season. By itself, that doesn’t mean he’s doing anything wrong. Pitchers are vulnerable to random fluctuations and luck in nine — or even in 30 — starts. For example, take the Hamels from 2009: After the left-hander finished 2008 with a 3.09 ERA and a World Series MVP trophy, expectations were high for the next season. But Hamels fell by the wayside and posted a 4.32 ERA, even though his walk, strikeout, and ground ball numbers were all in the normal range for him.
His DIPS numbers suggested that there wasn’t anything really wrong with Hamels then, and that with a little bit of patience, he would go back to dominating hitters as he had previously. In 2010, that suggestion came to fruition, and Hamels went right back to being one of the game’s premier left-handed starters.
Fast forward to 2013, and Hamels ERA is up once again. However, this time, something does look different. Look at his walk rate, his strikeout rate, his SIERA and his ERA in the past six years:
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