ERA

George Kirby · Season-by-season history

ERA over time

George Kirby — 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 0.84 1.68 2.53 3.37 4.21 2022 2023 2024 2025 2022 · Seattle Mariners · MLB: 3.39 Seattle Mariners 2023 · Seattle Mariners · MLB: 3.35 Seattle Mariners 2024 · Seattle Mariners · MLB: 3.53 Seattle Mariners 2025 · Seattle Mariners · MLB: 4.21 Seattle Mariners
  • Seattle Mariners · MLB
SeasonTeamLeagueERA
2025 Seattle Mariners MLB 4.21
2024 Seattle Mariners MLB 3.53
2023 Seattle Mariners MLB 3.35
2022 Seattle Mariners MLB 3.39