Trainer Mark O'Neal reiterated that Wood will have arthroscopic surgery on his right shoulder after the season to "clean up" fraying in the rotator cuff and labrum, the Chicago Sun-Times reports.
Because doctors have told Wood he can't damage the shoulder any more by finishing the season, the surgery may be delayed until the offseason as long as Wood can show that he can pitch effectively as a reliever. In his last start, Wednesday in Cincinnati, his velocity dropped to 87 miles-per-hour on his fastball. Wood by his own admission won't be able to survive long unless he can increase his velocity through his current throwing program. The Cubs won't know the extent of the damage until the operation. So if he has the surgery in October or November, there is no telling how long his recovery time will be. "It depends on the severity of what they have to do when they get in there," O'Neal said. "If it's done at the end of the season and it's a simple debridement of the cuff and labrum, then he would be ready by spring training." Wood has felt improvement in his shoulder after getting a cortisone shot Thursday in Cincinnati. "The last three days I have thrown," he said of playing catch.