How Al Mattern's ERA Compares to Similar Players
Al Mattern posted a career ERA of 3.37, below the starting pitcher average of 3.87 — production that kept him consistently ahead of most peers. His strongest ERA season came in 1908, posting 2.08, below the starting pitcher average of 2.35 that year. The highest point came in 1912 at 7.11, well above the starting pitcher average of 3.34 that year, a partial season. Production slipped through the final seasons. The figure moved from 2.98 in 1910 to 4.98 in 1911 and 7.11 in 1912. The decline marked the closing chapter of the career. Significant season-to-season variance characterizes the ERA profile — ranging from 2.08 to 7.11 — though the career average remained above league norms.
Al Mattern Lifetime ERA and Similar Stats
Stats similar to ERA for Al Mattern
| Al Mattern
ERA | Al Mattern
Component ERA | Al Mattern
Defense Independent ERA |
|---|
| Career | 3.37 | 3.81 | 3.84 |
| Season Avg. | 3.37 | 3.81 | 3.84 |
| 162 Game Avg. | 3.37 | 3.81 | 3.84 |
| More Info | See More | See More | See More |
Al Mattern ERA Per Season
Al Mattern's ERA 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.
Al Mattern ERA by Team
Al Mattern's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Al Mattern ERA Year-Over-Year Change
A waterfall chart tracking how Al Mattern's career ERA 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.
Al Mattern ERA Distribution vs. Comparable Players
Each box summarizes Al Mattern's seasonal ERA 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.
Al Mattern ERA — Season-by-Season Breakdown
Every season of Al Mattern's MLB career with ERA 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.
