How Jerry Koosman's Games Started % Compares to Similar Players
Jerry Koosman posted a career Games Started % of 86.11, well above the league average of .644 — a mark that ranked among the best of his era. His best Games Started % season came in 1969, posting 100.0, well above the league average of .784 that year. The lowest point came in 1967 at 33.33, well above the league average of .790 that year. The Games Started % trended upward through the final seasons. The figure moved from 64.86 in 1983 to 94.44 in 1984 and 94.74 in 1985. The upward arc continued through his final campaign. Some season-to-season variance runs through the career line, but the career average remained well above league norms across 19 seasons.
Jerry Koosman Lifetime Games Started %
Stats similar to Games Started % for Jerry Koosman
| Jerry Koosman
Games Started % |
|---|
| Career | 86.11 |
| Season Avg. | 86.11 |
| 162 Game Avg. | 86.11 |
| More Info | See More |
Jerry Koosman Games Started % Per Season
Jerry Koosman's Games Started % 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 Games Started % by Team
Jerry Koosman's career Games Started % totals broken down by each team he played for, ordered by when he first joined that team.
Jerry Koosman Games Started % Year-Over-Year Change
A waterfall chart tracking how Jerry Koosman's career Games Started % 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 Games Started % Distribution vs. Comparable Players
Each box summarizes Jerry Koosman's seasonal Games Started % 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 Games Started % — Season-by-Season Breakdown
Every season of Jerry Koosman's MLB career with Games Started % 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.
