Agreed on all How does a hitter go about changing his hitting mechanics? My assumption is (Frequently) the subject is broached by coaching staff, the player gets directed to a coach with film and stills much like Parker's, and then comparisons are made to other more successful players to emulate, then more film and BP, the repeat. my assumption is, Joe is the best hitter in baseball and Parms has been struggling and shows a similar skillset to Joe, let's coach Parms into a higher contact more patient approach like Joe. it seems like Brunansky and Molitor have had a profound impact on the team in a fairly short amount of time, and the shift of focus from contact hitting focus to power hitting focus with Parms may be more evidence of it.