How Jerry Koosman's Opposing Batting Average Compares to Similar Players

Jerry Koosman posted a career Opposing Batting Average of .252, near the starting pitcher average of .260 — a profile that tracked closely with league norms. His strongest Opposing Batting Average season came in 1969, posting .211, below the starting pitcher average of .242 that year. The highest point came in 1982 at .287, near the starting pitcher average of .264 that year. Production slipped through the final seasons. The figure moved from .266 in 1983 to .267 in 1984 and .277 in 1985. The decline marked the closing chapter of the career. One of the more consistent Opposing Batting Average producers of his era, the career line shows near-average output with little season-to-season variance across 19 seasons.

Jerry Koosman Lifetime Opposing Batting Average and Similar Stats

Stats similar to Opposing Batting Average for Jerry Koosman
Jerry Koosman
Opposing Batting Average
Jerry Koosman
Opposing Batting Average on Balls in Play
Career0.2520.288
Season Avg.0.2520.288
162 Game Avg.0.2520.288
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Jerry Koosman Opposing Batting Average Per Season

Jerry Koosman's Opposing Batting Average for each season of his MLB career, plotted against that year's league average. Switch between comparisons — National League, Hall of Fame, SP, North America, or players born in the same country — to see how he stacked up year by year.
Jerry Koosman Opposing Batting Average per season line chart

Jerry Koosman Opposing Batting Average by Team

Jerry Koosman's career Opposing Batting Average totals broken down by each team he played for, ordered by when he first joined that team.
Jerry Koosman career Opposing Batting Average by team bar chart

Jerry Koosman Opposing Batting Average Year-Over-Year Change

A waterfall chart tracking how Jerry Koosman's career Opposing Batting Average 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.
Jerry Koosman Opposing Batting Average year-over-year waterfall chart

Jerry Koosman Opposing Batting Average Distribution vs. Comparable Players

Each box summarizes Jerry Koosman's seasonal Opposing Batting Average 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.
Jerry Koosman Opposing Batting Average distribution box chart versus comparable players

Jerry Koosman Opposing Batting Average — Season-by-Season Breakdown

Every season of Jerry Koosman's MLB career with Opposing Batting Average 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.
Jerry Koosman Opposing Batting Average season-by-season breakdown table