How Jack Rowan's ERA Compares to Similar Players
Jack Rowan posted a career ERA of 3.07, well below the starting pitcher average of 3.87 — a mark that ranked among the best of his era. His strongest ERA season came in 1908, posting 1.82, well below the starting pitcher average of 2.35 that year. The highest point came in 1906 at 11.0, well above the starting pitcher average of 2.63 that year. The ERA trended upward through the final seasons. The figure moved from 4.72 in 1911 to 3.0 in 1913 and 3.46 in 1914. The upward arc continued through his final campaign. Significant season-to-season variance characterizes the ERA profile — ranging from 1.82 to 11.0 — though the career average remained well above league norms.
Jack Rowan Lifetime ERA and Similar Stats
Stats similar to ERA for Jack Rowan
| Jack Rowan
ERA | Jack Rowan
Component ERA | Jack Rowan
Defense Independent ERA |
|---|
| Career | 3.07 | 3.34 | 3.64 |
| Season Avg. | 3.07 | 3.34 | 3.64 |
| 162 Game Avg. | 3.07 | 3.34 | 3.64 |
| More Info | See More | See More | See More |
Jack Rowan ERA Per Season
Jack Rowan'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.
Jack Rowan ERA by Team
Jack Rowan's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Jack Rowan ERA Year-Over-Year Change
A waterfall chart tracking how Jack Rowan'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.
Jack Rowan ERA Distribution vs. Comparable Players
Each box summarizes Jack Rowan'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.
Jack Rowan ERA — Season-by-Season Breakdown
Every season of Jack Rowan'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.
