ERA

Clayton Mortensen · Season-by-season history

ERA over time

Clayton Mortensen — 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 1.56 3.12 4.69 6.25 7.81 2009 2010 2012 2013 2009 · Athletics · MLB: 7.81 2010 · Athletics · MLB: 4.50 2012 · Boston Red Sox · MLB: 3.21 2013 · Boston Red Sox · MLB: 5.34
  • Athletics · 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.

Clayton Mortensen — ERA by season
SeasonTeamLeagueERA
2013 Boston Red Sox MLB 5.34
2012 Boston Red Sox MLB 3.21
2010 Athletics MLB 4.50
2009 Athletics MLB 7.81