No competitive throwing doesn't mean he won't be able to do any rehabilitation, it just means not pitching in an actual game. And it seems to me that pitchers who have shoulder surgery aren't usually out longer than a year; that's even longer than pitchers recovering from TJS. he'll likely not throw a ball at all for 6-7 months after the surgery, and that will be 20-30 feet and very softly. it will probably take another 3 months beyond that to get up enough strength in his shoulder to throw hard enough to be confused with a baseball player. after that 9-10 months, he's looking at either extended spring training or a tour of the minors, racking up 4-6 rehab starts. 1 year isn't out of the question and almost should be expected the rehab he'll do up to that point is mostly basic range of motion exercises