MESA, Ariz. - Cubs pitcher Scott Baker, who missed all of last season following Tommy John surgery, has been shut down after suffering a "setback" in his rehab Sunday.
Baker, who experienced soreness the morning after that brief start, had another MRI on the surgically repaired elbow on Monday, and results showed enough potential problems in the area to prompt a consultation with the team doctor this weekend.
"It's just too soon to really know,'' manager Dale Sveum said, "until after he sees the doctor and we get a little better showing of what's going on and where to move forward."
Team officials said the MRI results were not conclusive and held out hope that it's not a serious setback.
"It's more disappointing for him, for a guy that's worked that hard and did everything," Sveum said, "and really did nothing to warrant something like this, being shut down. Hopefully, it's not that big a deal and he can continue [soon]. But it's just a wait-and-see thing right now."
Baker recorded only one out in Sunday's start against the Oakland Athletics, his first official game action since last spring. He gave up three runs on two walks and three hits, including a three-run home run.
Until then, he had experienced no issues with the elbow since starting rehab work after the April 17 surgery.
He and the team were targeting a mid-April regular-season debut.
Baker, a former 15-game winner with the Minnesota Twins, signed a one-year, $5.5 million deal as a free agent last fall.