It’s never a good sign when a manager says his ace pitcher “has some things going on” in his shoulder, but that’s exactly what Chicago White Sox manager Ozzie Guillen said about Jake Peavy the other day.

Due to Peavy’s achy shoulder, the White Sox skipped his Thursday night start against the Pittsburgh Pirates, and he’ll attempt to start on Saturday.

It’s kind of odd timing for Peavy’s injury because he’s coming off two of his better starts of the season. In his last two starts, Peavy has given up just four runs, two walks, and has eight K’s in 14 IP. Now if I was told that Peavy had a bum shoulder after his start against the Tampa Bay Rays in which he gave up 10 hits and five runs in 5.1 IP, then I’d believe it.

Overall, Peavy has had a pretty disappointing first full year in the American League, but I don’t think anyone is surprised about that. Going from the hitting challenged NL West and pitcher-friendly Petco Park to the American League and US Cellular Field, I think everyone knew his stats would take a hit.

So far in 2010, Peavy has given up the most hits/9 (9.1) and HR/9 (1.3) of his career and has his lowest K/9 (7.6) since 2003. Not to mention that Peavy also sports a 5.62 ERA and 1.33 WHIP.

Hopefully for White Sox fans the extra days rest will do Peavy some good.

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