ERA

Zack Kelly · Season-by-season history

ERA over time

Zack Kelly — ERA over time Each bar is a recorded season value, grouped by season and coloured by team and competition. Bars extend from zero. Focus or hover over a bar for its exact value. 0 0.92 1.83 2.75 3.66 4.58 2022 2023 2024 2025 2022 · Boston Red Sox · MLB: 3.95 Boston Red Sox 2023 · Boston Red Sox · MLB: 3.86 Boston Red Sox 2024 · Boston Red Sox · MLB: 3.97 Boston Red Sox 2025 · Boston Red Sox · MLB: 4.58 Boston Red Sox
  • Boston Red Sox · MLB
SeasonTeamLeagueERA
2025 Boston Red Sox MLB 4.58
2024 Boston Red Sox MLB 3.97
2023 Boston Red Sox MLB 3.86
2022 Boston Red Sox MLB 3.95