Re: Roger Clemens report
The big flaw in this argument is that both Ryan and R. Johnson started off throwing 100 MPH, while Clemens started throwing 95 MPH. So as they reached 40 years old, their velocity dropped to 95 or around where Clemens was at age 25. Clemens' velocity should have dropped to around 90 MPH, but stayed at close to 95 when he was 40.
I doubt that there is any other pitcher who started out at 95 MPH who still threw that hard at age 40.