The MLB 30 in '30 series by Moneyline aims to forecast the best players at each position five years into the future. In this edition, a spotlight is placed on the second basemen. Predicting the future of talent at this position presents challenges, as many shortstop prospects often transition to second base due to changes in their teams' rosters or to accommodate established stars at shortstop. Jackson Holliday exemplifies this trend, having been drafted as a shortstop before making the shift to second base in the majors. Evaluating both offensive and defensive capabilities has been key to shaping these predictions, though the selections ultimately remain subjective projections of player potential.

Prior to delving into the rankings, it is important to acknowledge current veterans who are projected to retire from stardom or shift to different roles before the 2030 season. Notable players excluded from the rankings due to anticipated age-related declines include Ozzie Albies (33, Atlanta Braves), Jose Altuve (40, Houston Astros), and Marcus Semien (39, Texas Rangers), among others.

Beginning the countdown, the list of anticipated standout second basemen includes emerging talents and established players alike. Noteworthy mentions feature: 30. Termarr Johnson of the Pittsburgh Pirates, who was a highly regarded draft pick in 2022 and is still developing his potential. 29. Max Muncy, recently drafted by the Las Vegas Athletics and showcasing promise despite a slow start. 28. Juan Brito, with the Cleveland Guardians, who has made a name for himself in the minors and is on the cusp of an MLB debut. Each player listed has unique attributes and challenges that will shape their careers as they aim for excellence in a competitive landscape.