How Sonny Siebert's ERA Compares to Similar Players
Sonny Siebert posted a career ERA of 3.21, below the starting pitcher average of 3.87 — production that kept him consistently ahead of most peers. His strongest ERA season came in 1967, posting 2.38, well below the starting pitcher average of 3.29 that year. The highest point came in 1973 at 4.06, near the starting pitcher average of 3.71 that year. The ERA trended upward through the final seasons. The figure moved from 4.06 in 1973 to 3.84 in 1974 and 3.9 in 1975. The upward arc continued through his final campaign. Some season-to-season variance runs through the career line, but the career average remained above league norms across 12 seasons.
Sonny Siebert Lifetime ERA and Similar Stats
Stats similar to ERA for Sonny Siebert
| Sonny Siebert
ERA | Sonny Siebert
Component ERA | Sonny Siebert
Defense Independent ERA |
|---|
| Career | 3.21 | 3.19 | 3.82 |
| Season Avg. | 3.21 | 3.19 | 3.82 |
| 162 Game Avg. | 3.21 | 3.19 | 3.82 |
| More Info | See More | See More | See More |
Sonny Siebert ERA Per Season
Sonny Siebert's ERA 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.
Sonny Siebert ERA by Team
Sonny Siebert's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Sonny Siebert ERA Year-Over-Year Change
A waterfall chart tracking how Sonny Siebert'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.
Sonny Siebert ERA Distribution vs. Comparable Players
Each box summarizes Sonny Siebert'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.
Sonny Siebert ERA — Season-by-Season Breakdown
Every season of Sonny Siebert'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.
