Justin Masterson has lost 2.6 miles per hour off his fastball between this season and last, leading a list of soon-to-be free agent starting pitchers.
Felipe Paulino (-2.2 MPH), Dan Haren (-1.8 MPH), and Bruce Chen (.1-5 MPH) are the only other starters waiting to hit the market that have lost at least a mile-and-a-half off their fastball over the last year.
Conversely, four pitchers have seen their velocity go up by at least a mile over the same time frame.
Brandon McCarthy (+2.2), Jorge De La Rosa (+1.6), Ryan Vogelsong (+1.3) and J.A. Happ (+1.0) have added heat.