No disrespect to Corbin Carroll (dudes a stud) but Mike Trout had the greatest rookie year of all time:
.326/.399/.564, 168 OPS+/167 wRC+, 30 HR, 49 SB, 129 R, 14.3 BsR (highest by a rookie since 1920), 21 DRS in CF (Wilson DPOY), 10.5 bWAR/10.1 fWAR
No rookie year compares