Phillies fire Rob Thomson, name Don Mattingly interim manager after 9-19 start to season

Key Points:

• The Philadelphia Phillies fired manager Rob Thomson after a poor start to the 2026 season, despite his status as the winningest manager in franchise history and leading the team to four consecutive postseason appearances.
• Don Mattingly, the bench coach and father of Phillies GM Preston Mattingly, was promoted to interim manager as the team hopes a managerial change can reverse their 9-19 record and recent 10-game losing streak.
• The Phillies, carrying their largest payroll ever and high World Series expectations, have struggled with hitting, pitching, and defense, exposing weaknesses in the roster constructed by president of baseball operations Dave Dombrowski.
• Dombrowski acted quickly compared to past managerial changes, having previously fired Joe Girardi after 51 games in 2022, and reportedly pursued Alex Cora for the managerial role before promoting Mattingly.
• Thomson, known for his steady leadership and postseason success including a 2022 National League pennant, faced criticism for lineup inconsistency and loyalty to underperforming players, ultimately becoming a symbol of the team's recent stagnation.