While true, it's also a general truth that FB goes down year over year on average. I'm not really sure how much but i would guess at least 0.3 MPH per season would be in the right area. Seeing a bump rather than a decrease would be difficult to explain, unless he found some mechanical change that unlocked more, rather than just simply trying to throw harder. Either way, mechanical change or increased effort - with pitchers that definitely increases injury risk over and above the usual pitcher injury risks.