FanPost

Sox starters showing fatigue, choking, or just being held down by Liriano?

We have all been taking shots at Robin Ventura lately and we have good reason to do so. Many moves have been easily first-guessed, let alone second guessed. Looking at the Sox starting pitching performance the last two months however shows a bad trend. The following data was collected from Fangraphs and is current as of 9/13/2012.

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IP BB/9 K/9 H/9 BABIP LOB %
April 145.0 2.73 8.38 6.58 0.239 71.9
May 168.2 2.82 7.15 8.86 0.291 70.3
June 175.2 2.10 7.43 8.81 0.293 78.4
July 156.1 2.71 5.70 9.79 0.299 74.7
August 165.1 3.15 7.89 9.69 0.317 78.8
September 55.1 4.72 10.41 8.78 0.333 74.8

The most startling trend from the graph is the steep ascent of the BB/9 rate over the last 7 weeks of the season. In October alone, the BB/9 rate is at least 66% higher than it was for any of the first 4 months of the season. It is easy to attribute this to Liriano and his massive 6.49 BB/9 over the last 30 days but every Sox starter has a higher BB/9 over the last 30 days then his full season total except Gavin Floyd. It is also interesting to note that the BABIP for starters has also increased since August 1. I am not informed enough to know if there is a correlation between BABIP and BB/9, but my instinct says no.

So I ask the question, are the Sox starters fatigued or succumbing to the pressure?

Edit: Added H/9 at request of larry and removed IBB from BB/9. Interesting, the Sox SP IBB issues by month: 0,2,1,1,6,1. 6 IBB in August?

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