Newly acquired Edwin Jackson will start for the Cardinals on Friday against the Cubs, general manager John Mozeliak told reporters before Wednesday's game agains the Astros, via MLB.com's Matthew Leach.
The Cardinals will bump Kyle Lohse to Saturday.
The GM also noted right-hander Kyle McClellan will move from the rotation to the bullpen. McClellan was 7-6 with a 4.15 ERA in 17 starts this season after appearing in 202 games out of the bullpen from 2008-10, with six saves. McCelland had a 2.27 ERA out of the bullpen last season.
Mozeliak said the Cardinals would be shorthanded against the Astros tonight, but outfielder Corey Patterson will be available.For more baseball news, rumors and analysis, follow @cbssportsmlb on Twitter or subscribe to the RSS feed.