How Don McMahon's Home Runs Allowed Per 9 Innings Compares to Similar Players

Don McMahon posted a career Home Runs Allowed Per 9 Innings of .720, below the relief pitcher average of .823 — production that kept him consistently ahead of most peers. His strongest Home Runs Allowed Per 9 Innings season came in 1957, posting .000, well below the relief pitcher average of .911 that year. The highest point came in 1974 at 1.54, well above the relief pitcher average of .640 that year, a partial season. Production slipped through the final seasons. The figure moved from 1.14 in 1972 to .300 in 1973 and 1.54 in 1974. The decline marked the closing chapter of the career. Significant season-to-season variance characterizes the Home Runs Allowed Per 9 Innings profile — ranging from .000 to 1.54 — though the career average remained above league norms.

Don McMahon Lifetime Home Runs Allowed Per 9 Innings

Stats similar to Home Runs Allowed Per 9 Innings for Don McMahon
Don McMahon
Home Runs Allowed Per 9 Innings
Career0.72
Season Avg.0.72
162 Game Avg.0.72
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Don McMahon Home Runs Allowed Per 9 Innings Per Season

Don McMahon's Home Runs Allowed Per 9 Innings 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 McMahon Home Runs Allowed Per 9 Innings per season line chart

Don McMahon Home Runs Allowed Per 9 Innings by Team

Don McMahon's career Home Runs Allowed Per 9 Innings totals broken down by each team he played for, ordered by when he first joined that team.
Don McMahon career Home Runs Allowed Per 9 Innings by team bar chart

Don McMahon Home Runs Allowed Per 9 Innings Year-Over-Year Change

A waterfall chart tracking how Don McMahon's career Home Runs Allowed Per 9 Innings 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 McMahon Home Runs Allowed Per 9 Innings year-over-year waterfall chart

Don McMahon Home Runs Allowed Per 9 Innings Distribution vs. Comparable Players

Each box summarizes Don McMahon's seasonal Home Runs Allowed Per 9 Innings 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 McMahon Home Runs Allowed Per 9 Innings distribution box chart versus comparable players

Don McMahon Home Runs Allowed Per 9 Innings — Season-by-Season Breakdown

Every season of Don McMahon's MLB career with Home Runs Allowed Per 9 Innings 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.
Don McMahon Home Runs Allowed Per 9 Innings season-by-season breakdown table