Held by: Wally Berger & Frank Robinson
Number of HR: 38
Year set: 1930 & 1956
The only player that was close of tying or breaking the record was Albert Pujols in 2001. Pujols had 37 Home Runs in his rookie season, he was 1 HR away from tying the record.
Its pretty rare to see a rookie hit 25 HR in a season, only 22 players have. 38 just sounds ridiculous for a rookie to do.
Robinson had a great career getting a total of 586 Home Runs and 57 hits shy of 3000 hits.