ERA+

John Koronka · Season-by-season history

ERA+ over time

John Koronka — 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 16.2 32.4 48.6 64.8 81 2006 2007 2006 · Texas Rangers · MLB: 81 Texas Rangers 2007 · Texas Rangers · MLB: 60 Texas Rangers
  • Texas Rangers · MLB
SeasonTeamLeagueERA+
2007 Texas Rangers MLB 60
2006 Texas Rangers MLB 81