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Archive for November 20th, 2011

(The following was originally published at SB*Nation’s Pinstripe Alley)

Pitching, pitching, and more pitching. That has become Brian Cashman’s mantra when addressing questions about his offseason plans. But should that be his only focus?

As we enter the process this winter, I don’t anticipate a bat being of need at all. Offense is not an issue that we’ll be focusing on. It will be the pitching. I feel our offense is very, very strong. – Brian Cashman, quoted by Bloomberg, November 2, 2011

Last year, the Yankees offense was very strong in terms of run production. In fact, it was historic when compared to the league average. However, a couple of warning signs are evident (albeit relatively minor) when you take a look under the hood.  As illustrated in the chart below, at the same time the Yankees’ average run total per game spiked, the underlying performance of the offense, as measured by OPS+, dropped to its second lowest level since 2001. Also, although the lineup’s 2011 wRC+ of 113 was healthier than last year’s, it was still off recent highs in 2007 and 2009. Until 2010, the Yankees’ relative run production had an almost perfect correlation to weighted Runs Created and adjusted OPS (r2 of .97 and .93, respectively), so unless the divergence experienced over the past two years is sustainable because of an underlying dynamic (improved base running and lots of homeruns?), Cashman should at least be mindful about the possibility of these lines converging in 2012.

Yankees Relative Offensive Performance, 1996-2011

Note: R/G vs. Lg is the Yankees’ R/G divided by the league average.
Source: fangraphs.com, baseball-reference.com, proprietary calculations

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