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 33 66 99 132 165 2023 2024 2025 2023 · Boston Red Sox · MLB: 126 Boston Red Sox 2024 · Boston Red Sox · MLB: 127 Boston Red Sox 2025 · Los Angeles Angels · MLB: 165 Los Angeles Angels
  • Boston Red Sox · MLB
  • Los Angeles Angels · MLB
SeasonTeamLeagueERA+
2025 Los Angeles Angels MLB 165
2024 Boston Red Sox MLB 127
2023 Boston Red Sox MLB 126