"It’s always nice to have some clarity when dealing with an injury," Baker said Monday. "Any type of setback is not fun and there’s never good timing for any sort of setback, but knowing what we’re dealing with helps us deal with it better, obviously. With the type of injury it is, Doc likened it to a scab. You can’t pick at it, you have to let it heal and rest and get back after it after that."

The Cubs have no timetable for his return at this point, and Baker said he'll be patient. He had hoped to return in mid-April, but that won't happen now. 

"It is disappointing in the fact that one, I feel like I’ve sit out enough," Baker said. "I don’t want to sit out any more than I have to. To sit here and say it’s going to be at least a month more than we originally anticipated, it’s tough. I’ve come this far. I’m not about to give up or give in. I’m just going to continue to try to get ready to pitch at whatever point during the season it is."

Baker was not expected to be healthy for opening day, but now it seems like his Cubs debut won't come until well into the season, if at all.

"It's hard not to feel OK about [Sunday's exam] because I am feeling much better," he said. "Obviously, we're doing something right as far as treatment and the medications are obviously helping."