How Don Brennan's ERA Compares to Similar Players
Don Brennan posted a career ERA of 4.19, near the relief pitcher average of 3.96 — a profile that tracked closely with league norms. His strongest ERA season came in 1935, posting 3.15, well below the relief pitcher average of 4.72 that year. The highest point came in 1937 at 6.75, well above the relief pitcher average of 4.82 that year, a partial season. Production slipped through the final seasons. The figure moved from 3.15 in 1935 to 4.39 in 1936 and 6.75 in 1937. The decline marked the closing chapter of the career. Significant season-to-season variance characterizes the ERA profile — ranging from 3.15 to 6.75 — though the career average tracked near league norms.
Don Brennan Lifetime ERA and Similar Stats
Stats similar to ERA for Don Brennan
| Don Brennan
ERA | Don Brennan
Component ERA | Don Brennan
Defense Independent ERA |
|---|
| Career | 4.19 | 4.43 | 4.01 |
| Season Avg. | 4.19 | 4.43 | 4.01 |
| 162 Game Avg. | 4.19 | 4.43 | 4.01 |
| More Info | See More | See More | See More |
Don Brennan ERA Per Season
Don Brennan's ERA for each season of his MLB career, plotted against that year's league average. Switch between comparisons — National League, Hall of Fame, RP, North America, or players born in the same country — to see how he stacked up year by year.
Don Brennan ERA by Team
Don Brennan's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Don Brennan ERA Year-Over-Year Change
A waterfall chart tracking how Don Brennan'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.
Don Brennan ERA Distribution vs. Comparable Players
Each box summarizes Don Brennan'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.
Don Brennan ERA — Season-by-Season Breakdown
Every season of Don Brennan'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.
