How Rich Robertson's ERA Compares to Similar Players
Rich Robertson posted a career ERA of 4.94, well above the starting pitcher average of 3.87 — production that significantly underperformed against league baselines. His strongest ERA season came in 1967, posting 4.5, well above the starting pitcher average of 3.29 that year. The highest point came in 1966 at 7.71, well above the starting pitcher average of 3.54 that year. The ERA trended upward through the final seasons. The figure moved from 5.48 in 1969 to 4.85 in 1970 and 4.57 in 1971. 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 6 seasons.
Rich Robertson Lifetime ERA and Similar Stats
Stats similar to ERA for Rich Robertson
| Rich Robertson
ERA | Rich Robertson
Component ERA | Rich Robertson
Defense Independent ERA |
|---|
| Career | 4.94 | 5.06 | 4.67 |
| Season Avg. | 4.94 | 5.06 | 4.67 |
| 162 Game Avg. | 4.94 | 5.06 | 4.67 |
| More Info | See More | See More | See More |
Rich Robertson ERA Per Season
Rich Robertson'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.
Rich Robertson ERA by Team
Rich Robertson's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Rich Robertson ERA Year-Over-Year Change
A waterfall chart tracking how Rich Robertson'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.
Rich Robertson ERA Distribution vs. Comparable Players
Each box summarizes Rich Robertson'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.
Rich Robertson ERA — Season-by-Season Breakdown
Every season of Rich Robertson'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.
