BlackJack on hitting

From Jack’s latest mailbag:

Q: Take Josh Fields for an example. The reason people can get a 90 mph fastball past him is that when he cocks, his right elbow flies up. This is not a difficult fix but yet he continues to do it. The rest of our lineup sans Gordon Beckham (who will be a monster hitter someday) can’t seem to not swing at a pitch out of the zone with a 2-0 count. This is stuff I have taught ten year olds to stop swinging at bad pitches.

A: Bad thing is, the things you talked about are sooo ingrained in a guys actions by the time he’s in the Big Leagues. Guys either have a good eye and patience/ pitch selection or they don’t. …