Thanks to a rule tweak after a truncated 2020 season, Angels outfielder Jo Adell is no longer considered a rookie heading into 2021. But Baseball America still recognizes him as such, and has Adell atop the list of top Angels prospects for a third straight season, followed by fellow outfielder Brandon Marsh at No. 2.
Adell totaled 124 at-bats last season, six shy of the 130 required to exhaust rookie status. Under normal rules, another way to use up rookie status is to accrue 45 days of pre-September service time. But since rosters didn’t expand in September 2020, all days of major league service were counted towards rookie status.