Moncada's K rate in AA last year was 31%.
His K rate in AAA this year is 26%.
Jeff Todd wrote this today:
White Sox GM Rick Hahn shot down the idea that top prospect Yoan Moncada will push his way onto the MLB roster early this year, as Dan Hayes of CSN Chicago reports. All signs are pointing up for Moncada, who has tamped down on the strikeouts while showing signs of polishing up his defensive game. But that doesn’t mean the club is prepared to make an aggressive promotion. “He’s shown a fair amount of progress in each of those areas that we’ve asked of him,” said GM Rick Hahn. “That said, we want to see that over an extended period of time. It’s awfully important to not lose sight of the fact this is a 21-year-old player, one who was not playing two years ago as of right now. It’s a guy who has fewer than 325 or so plate appearances above A-ball.” Given that, says Hahn, the club won’t “rush” Moncada’s ascension.