How J. A. Happ's ERA Compares to Similar Players
J. A. Happ posted a career ERA of 4.13, near the starting pitcher average of 3.87 — a profile that tracked closely with league norms. His strongest ERA season came in 2009, posting 2.93, well below the starting pitcher average of 4.35 that year. The highest point came in 2007 at 11.25, well above the starting pitcher average of 4.56 that year. Production slipped through the final seasons. The figure moved from 3.65 in 2018 to 4.91 in 2019 and 5.79 in 2021. The decline marked the closing chapter of the career. Significant season-to-season variance characterizes the ERA profile — ranging from 2.93 to 11.25 — though the career average tracked near league norms.
J. A. Happ Lifetime ERA and Similar Stats
Stats similar to ERA for J. A. Happ
| J. A. Happ
ERA | J. A. Happ
Component ERA | J. A. Happ
Defense Independent ERA |
|---|
| Career | 4.13 | 4.01 | 4.16 |
| Season Avg. | 4.13 | 4.01 | 4.16 |
| 162 Game Avg. | 4.13 | 4.01 | 4.16 |
| More Info | See More | See More | See More |
J. A. Happ ERA Per Season
J. A. Happ's ERA for each season of his MLB career, plotted against that year's league average. Switch between comparisons — American League, Hall of Fame, SP, North America, or players born in the same country — to see how he stacked up year by year.
J. A. Happ ERA by Team
J. A. Happ's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
J. A. Happ ERA Year-Over-Year Change
A waterfall chart tracking how J. A. Happ's career ERA shifted from season to season. Each bar represents the change added to his career total that year, making peak and decline phases easy to spot.
J. A. Happ ERA Distribution vs. Comparable Players
Each box summarizes J. A. Happ's seasonal ERA alongside a selected comparison group across all seasons he played. The box covers the middle 50% of seasons, the center line is the median, and the whiskers extend to the min and max. A tighter box means more consistency; a higher median means more output. Use the selector to switch comparison groups.
J. A. Happ ERA — Season-by-Season Breakdown
Every season of J. A. Happ's MLB career with ERA alongside league, Hall of Fame, positional, birth region, and country-of-birth averages for that year. Career totals include sum, average, min, max, and median.
Note: A dash (—) means no qualifying players existed in that comparison group for that season. Most commonly this happens for the Hall of Fame group.
