I wonder if this thread somehow leads back to the questions regarding the Twins medical staff. I hear repeatedly that guys coming back from TJ surgery often see their velocity increase, and most players are as good or better than prior to their surgery...Strasburg is the latest example. Liriano took way longer than "normal" to recover and his velocity dropped significantly and he's NOT the same pitcher. It seems Nathan took longer to get back to normal and his velocity was down as well. I assume there is a standard recovery plan for this surgery, does the Twins staff alter it and mess things up some how? Not saying this is the case, have no way of knowing, just looking at the circumstances and asking the question.
I think it's kinda silly to think with any amount of certainty how any particular player is going to respond to TJS. As earlier stated, Liriano's arm was absolutely electric pre-TJS. Between velocity, movement, and that slider he had an awful lot to lose. Based on the field staff's insinuation that he did not come to camp as prepared as he should have last year, it's very possible that Liriano just isn't very dedicated to his craft. Regarding Nathan, he had a decision to make in 2010 if he should even undergo that extensive of a surgery at the age of 35. At what point is it reasonable to expect a healthy pitcher's velocity to start decreasing? When you factor in undergoing a major surgery, especially at age 35, when the body is supposed to be declining, I would expect a "longer than normal" recovery.
I'm not trying to be an apologist for the Twins' Med Staff, just saying that I don't see how they have any culpability in these two particular cases.