ERA

Mike Hartley · Season-by-season history

ERA over time

Mike Hartley — 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 1.8 3.6 5.4 7.2 9 1993 1995 1993 · Minnesota Twins · MLB: 4.00 1995 · Boston Red Sox · MLB: 9.00
  • Minnesota Twins · MLB
  • Boston Red Sox · MLB

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

Mike Hartley — ERA by season
SeasonTeamLeagueERA
1995 Boston Red Sox MLB 9.00
1993 Minnesota Twins MLB 4.00