ERA

Kenley Jansen · Season-by-season history

ERA over time

Kenley Jansen — 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 0.73 1.45 2.18 2.9 3.63 2023 2024 2025 2023 · Boston Red Sox · MLB: 3.63 Boston Red Sox 2024 · Boston Red Sox · MLB: 3.29 Boston Red Sox 2025 · Los Angeles Angels · MLB: 2.59 Los Angeles Angels
  • Boston Red Sox · MLB
  • Los Angeles Angels · MLB
SeasonTeamLeagueERA
2025 Los Angeles Angels MLB 2.59
2024 Boston Red Sox MLB 3.29
2023 Boston Red Sox MLB 3.63