The Cincinnati Reds announced today that their 3rd baseman Scott Rolen had arthroscopic shoulder surgery and will be out an additional 4-6 weeks. Rolen has been on the disabled list since July 22.

Cincinnati Enquirer beat reporter John Fay writes about the procedure.

The procedure was just to clean it up. Four to six weeks, which is projected to be out, still takes you to early to mid-September. I would not be shocked if he’s done for the year — depending where the Reds are in the standings when he’s ready.

If Rolen doesn’t return this season, he should be all the more healthy for 2012. And now Todd Frazier has a great opportunity to show what he can do, so long as Dusty Baker resists that urge to play veteran Miguel Cairo.