Man, eff these guys and their super long swings 
hey big train, did you see/hear the stuff about duffy's mechanics?
I have not, what was it about?
about all the problems with duffy's mechanics that popped up at the end of the year. the mechanics guy they talked to said he thought it was just fatigue from pitching more innings over the course of the year than he's been used to. just wanted to see if that seemed plausible to you.
Yeah I mean your mechanics can break down during the course of the game when you get fatigued too. That's when most of your bad habits form when you are tired and not as fresh. Over the course of the season you have your off days and rest but when you pitch that much in a 6-7 month season it takes its toll.
Example of this is Verlander and Lincecum. They were both throwing upper 90's a few years ago, wear and tear on your body breaks it down and can cause poor mechanics that lead to injury. This is especially true when your body is used to pitching half as many innings a year.
So yeah, your mechanics can break down over the course of a season.