Promoted to Major Leagues for MLB Debut Against Phillies

The Miami Marlins officially selected the contract of 23-year-old catcher Joe Mack from Triple-A Jacksonville on Monday, May 4, 2026. Ranked as the club's No. 3 prospect, Mack was added to the roster in time to make his major league debut in the series finale against the Philadelphia Phillies. The move integrates the highly-rated prospect into the Marlins' catching rotation as they look to evaluate their young talent at the highest level during the 2026 regular season campaign.