First, a quick primer. Here is how Ronald Acuña Jr. ranked among all rookies across MLB this past season in a few offensive categories.
HR - 3rd (26)
SB - T-2nd (16)
OPS - 4th (.917)
wRC+ - 4th (143)
Slugging - 3rd (.552)
fWAR - T-1st (3.7)
And here is how Ronald Acuña Jr. ranked in the second half against all players (not just rookies) across baseball.
HR - 4th (19)
SB - 8th (14)
OPS - 3rd (1.