Just heard this on the radio which spurred this in my mind. The studies have been around a few years now and I recently heard of another one but the old school thought that pitching from the windup helps a pitcher create more velocity is being debunked. Now more and starters are pitching exclusively from the stretch. It is an interesting trend and I wonder if it will really take off and the windup will become the exception as opposed to the rule. It's a lot easier to repeat your delivery from the stretch and eliminating a lot of unnecessary movement should help pitchers.
Buchholz's turn around last year coincided with his decision to move away from the windup. Strasburg, Darvish, Carrasco and Thor are some of the starters who no longer use the windup.
Maybe a guy like Henry Owens should be making this change, rather than constantly changing his delivery.
The key phrase is "eliminating unnecessary movement either from the windup or stretch. Those pitchers who bring their hands above their head (to either slow them down, stay in line or help with some sort of timing issue) still may be mimicking the stretch with their lower half - minimizing movements. The key to throwing hard, is to try not to throw hard (ala a golf swing) and utilize the entire body in rhythm. This is why you see so many young pitchers with higher velo in the lower ranks utilizing max or semi max efforts to impress scouts and bloggers w/90+ velo. This additional effort / movement hurts command and puts undue stress on certain body parts. And as everyone knows, throwing hard is not the key to outs in advance level ball.