What are the MLB rookie records?

MLB rookie records encompass various achievements by first-year players, including batting, pitching, and overall performance. Notable records include Pete Alonso's 53 home runs in 2019, which is the highest for a rookie, and Ichiro Suzuki's 242 hits in 2001, the most in a single season by a rookie. On the pitching side, J.R. Richard holds the record for the most strikeouts by a rookie with 305 in 1971. These records highlight the remarkable talent and impact rookies can have on the game.