Scott Baker undergoes unscheduled Tommy John surgery

Minnesota Twins right-hander Scott Baker was scheduled to undergo surgery in New York on Tuesday to repair his right flexor pronator muscle.

But the procedure wound up being more extensive.

According to multiple reports, Dr. David Altchek found damage to Baker's Ulnar Collateral Ligament while operating and proceeded with Tommy John surgery.

During a press conference last week, Baker -- after visiting with Altchek one day prior -- said he was told there was no damage to his UCL.

The flexor muscle surgery would have required a six-month rehab, but Tommy John surgery requires at least 12 months.

Baker has a team option for $9.25 million in 2013.

Phil Mackey is a columnist for 1500ESPN.com. He co-hosts "Reusse & Mackey" weekdays from 4 to 6pm on 1500 ESPN Twin Cities.
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