ERA

Stephen Kolek · Season-by-season history

ERA over time

Stephen Kolek — 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 0.38 0.76 1.15 1.53 1.91 2025 2025 · Kansas City Royals · MLB: 1.91
  • Kansas City Royals · MLB

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

Stephen Kolek — ERA by season
SeasonTeamLeagueERA
2025 Kansas City Royals MLB 1.91