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. Exact values are listed in the table below. 0 1.57 3.14 4.7 6.27 7.84 2006 2007 2006 · Texas Rangers · MLB: 5.69 2007 · Texas Rangers · MLB: 7.84
  • Texas Rangers · MLB

Hover over a bar for its value. Only numeric values with a recorded season are charted; missing seasons are not treated as zero.

John Koronka — ERA by season
SeasonTeamLeagueERA
2007 Texas Rangers MLB 7.84
2006 Texas Rangers MLB 5.69