Zimmermann may need elbow surgery
Dr. Lewis Yocum, an expert in Tommy John ligament replacement surgery, is supposed to examine Zimmermann's MRI exam on Tuesday.
The Nationals already have said they expect the worst, and only went to Yocum to provide to confirm the diagnosis. If the 23-year-old Zimmermann undergoes the surgery, he will be out at least a year.
Copyright 2009 by The Associated Press
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