Would it make you feel better if say, the DBacks had immediately sent Paul Goldschmidt at 21 after signing him out of College to the Majors, and he struck out a bunch, instead of sending him to Rookie ball which they did? I think its safe to say at this point Buxton was rushed... Just a guess, but if he spent all of last season, and half of this season in the minors his "1st 180 plate appearances" might look a little different, as a 22 year old (still younger than many "elite hitters") debuting in the Majors. I'm not really seeing in anyway how giving a baseline 1st 180 Major league PA test to players is in anyway meaningful. Kris Bryant, Paul Goldschmidt, and many others were in college at 21... Byron Buxton came from rural GA where he faced poor competition, spent most of his Age 20 season not playing, had ~250 PA's above A ball, and struck out a bunch in the Majors