Manager Dan Wilson said Friday that Woo (shoulder) will not start during Seattle's weekend series against the Cubs, Daniel Kramer of MLB.com reports.
Woo was removed from his most recent start Sunday against Houston after feeling soreness in his right shoulder, and although he was able to throw his normal between-starts bullpen session Thursday, the M's are still going to give the 26-year-old some extra time to recover. Wilson noted that he's optimistic Woo won't have to spend time on the injured list, though it's unknown when his next start will be. Kade Anderson will come up from Double-A to make his MLB debut Saturday, and Bryce Miller will move up in the rotation to start Sunday's series finale.