How Bill James's Gross Production Average (GPA) Compares to Similar Players

Bill James posted a career Gross Production Average (GPA) of .135, well below the league average of .247 — production that significantly underperformed against league baselines. His best Gross Production Average (GPA) season came in 1915, posting .207, near the league average of .229 that year. The lowest point came in 1916 at .075, well below the league average of .228 that year. Production slipped through the final seasons. The figure moved from .200 in 1917 to .090 in 1918 and .126 in 1919. The decline marked the closing chapter of the career. Significant season-to-season variance characterizes the Gross Production Average (GPA) profile — ranging from .075 to .207 — though the career average remained well below league norms.

Bill James Lifetime Gross Production Average (GPA)

Stats similar to Gross Production Average (GPA) for Bill James
Bill James
Gross Production Average (GPA)
Career0.135
Season Avg.0.135
162 Game Avg.0.135
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Bill James Gross Production Average (GPA) Per Season

Bill James's Gross Production Average (GPA) for each season of his MLB career, plotted against that year's league average. Switch between comparisons — American League, Hall of Fame, SP, North America, or players born in the same country — to see how he stacked up year by year.
Bill James Gross Production Average (GPA) per season line chart

Bill James Gross Production Average (GPA) by Team

Bill James's career Gross Production Average (GPA) totals broken down by each team he played for, ordered by when he first joined that team.
Bill James career Gross Production Average (GPA) by team bar chart

Bill James Gross Production Average (GPA) Year-Over-Year Change

A waterfall chart tracking how Bill James's career Gross Production Average (GPA) 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.
Bill James Gross Production Average (GPA) year-over-year waterfall chart

Bill James Gross Production Average (GPA) Distribution vs. Comparable Players

Each box summarizes Bill James's seasonal Gross Production Average (GPA) 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.
Bill James Gross Production Average (GPA) distribution box chart versus comparable players

Bill James Gross Production Average (GPA) — Season-by-Season Breakdown

Every season of Bill James's MLB career with Gross Production Average (GPA) 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.
Bill James Gross Production Average (GPA) season-by-season breakdown table