How Jim Acker's ERA Compares to Similar Players
Jim Acker posted a career ERA of 3.97, near the relief pitcher average of 3.96 — a profile that tracked closely with league norms. His strongest ERA season came in 1989, posting 2.43, well below the relief pitcher average of 3.52 that year. The highest point came in 1992 at 5.28, well above the relief pitcher average of 3.63 that year, a partial season. Production slipped through the final seasons. The figure moved from 3.83 in 1990 to 5.2 in 1991 and 5.28 in 1992. The decline marked the closing chapter of the career. Some season-to-season variance runs through the career line, but the career average tracked near league norms across 10 seasons.
Jim Acker Lifetime ERA and Similar Stats
Stats similar to ERA for Jim Acker
| Jim Acker
ERA | Jim Acker
Component ERA | Jim Acker
Defense Independent ERA |
|---|
| Career | 3.97 | 4.07 | 4.31 |
| Season Avg. | 3.97 | 4.07 | 4.31 |
| 162 Game Avg. | 3.97 | 4.07 | 4.31 |
| More Info | See More | See More | See More |
Jim Acker ERA Per Season
Jim Acker's ERA for each season of his MLB career, plotted against that year's league average. Switch between comparisons — American League, Hall of Fame, RP, North America, or players born in the same country — to see how he stacked up year by year.
Jim Acker ERA by Team
Jim Acker's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Jim Acker ERA Year-Over-Year Change
A waterfall chart tracking how Jim Acker'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.
Jim Acker ERA Distribution vs. Comparable Players
Each box summarizes Jim Acker'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.
Jim Acker ERA — Season-by-Season Breakdown
Every season of Jim Acker'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.
