With venerable ace Chris Carpenter coming off the 60-day disabled list to make his season debut Friday against the Cubs, the Cardinals have outrighted pitcher John Gaub off the 40-man roster, Jenifer Langosch of MLB.com reported. 

As CBSSports.com's Danny Knobler wrote Thursday night, Carpenter is beating his own expectations by pitching at all in 2012:

This spring, when Carpenter was sidelined with a nerve condition in his neck, the Cardinals were suggesting that he might be ready to pitch by the end of May, or at least in June.

Later, when Carpenter needed surgery to fix the problem, the Cardinals suggested Carpenter wouldn't pitch at all.

"I didn't think it would happen this year," Carpenter said last weekend. "Fortunately it is."

The roster casualty is Gaub, a 27-year-old lefty who has pitched in the minors for the Rangers, Rays and Cardinals this season. His only major league experience came in four relief appearances with the Cubs last season. Gaub posted a 6.68 ERA in 33 appearances with St. Louis's Triple-A Memphis affiliate this season.

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