According to Rotoworld.com:
Francisco Liriano will undergo Tommy John surgery Monday in California.
Dr. Lewis Yocum, who examined Liriano on Friday, will perform the surgery, which was determined to be the correct course of action after four opinions. Liriano is likely to miss all of 2007, leaving a huge void in Minnesota's rotation. Fortunately, there's a good chance he'll return at full strength in 2008.
Nov. 3 - 3:36 pm et