How Jon Lester's Range Factor Compares to Similar Players
Jon Lester posted a career Range Factor of .914, well below the league average of 3.1 — production that significantly underperformed against league baselines. His best Range Factor season came in 2010, posting 1.25, well below the league average of 2.94 that year. The lowest point came in 2019 at .323, well below the league average of 2.62 that year. The Range Factor trended upward through the final seasons. The figure moved from .719 in 2018 to .323 in 2019 and .929 in 2021. The upward arc continued through his final campaign. Some season-to-season variance runs through the career line, but the career average remained well below league norms across 15 seasons.
Jon Lester Lifetime Range Factor
Stats similar to Range Factor for Jon Lester
| Jon Lester
Range Factor |
|---|
| Career | 0.914 |
| Season Avg. | 0.914 |
| 162 Game Avg. | 0.914 |
| More Info | See More |
Jon Lester Range Factor Per Season
Jon Lester's Range Factor 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.
Jon Lester Range Factor by Team
Jon Lester's career Range Factor totals broken down by each team he played for, ordered by when he first joined that team.
Jon Lester Range Factor Year-Over-Year Change
A waterfall chart tracking how Jon Lester's career Range Factor 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.
Jon Lester Range Factor Distribution vs. Comparable Players
Each box summarizes Jon Lester's seasonal Range Factor 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.
Jon Lester Range Factor — Season-by-Season Breakdown
Every season of Jon Lester's MLB career with Range Factor 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.
