You keep using the word "magically" as if it's impossible for a player to improve his pitch recognition and ability to lay off breaking balls. A few years back, I said Eddie Rosario simply needs to lay off swinging at the worst 3-4% of pitches thrown to him and he'd be an above average player. I remember outright ridicule from some posters, saying that such a small change would barely make a dent in his numbers. Well... Outside Zone Swing Rate: 2016: 41.7% 2017: 37.6% OPS: 2016: .716 2017: .836 Small changes can reap huge rewards in this game, particularly when it comes to pitch selection and contact. Better selection means more pitches seen, which forces pitchers to throw more pitches in the zone. More pitches in the zone means more and better contact. It's a waterfall effect; small changes over thousands of pitches seen add up to more hits, more walks, and higher slugging. I'm not asking for Sano to "magically" become a different player, I'm saying he needs to work on a few small adjustments to become a better version of the player he is today, just as Rosario is not suddenly Joe Mauer just because he stopped swinging at pitches three feet out of the zone.