How Dae-Sung Koo's ERA Compares to Similar Players
Dae-Sung Koo posted a career ERA of 3.91, near the relief pitcher average of 3.96 — a profile that tracked closely with league norms. Across 1 season, the ERA arc showed a consistent if unspectacular start, with limited data making longer-term conclusions premature. With 1 season of data, the ERA arc was in line with league norms — too limited for reliable trend analysis. Some season-to-season variance runs through the career line, but the career average tracked near league norms across 1 season.
Dae-Sung Koo Lifetime ERA and Similar Stats
Stats similar to ERA for Dae-Sung Koo
| Dae-Sung Koo
ERA | Dae-Sung Koo
Component ERA | Dae-Sung Koo
Defense Independent ERA |
|---|
| Career | 3.91 | 4.53 | 4.09 |
| Season Avg. | 3.91 | 4.53 | 4.09 |
| 162 Game Avg. | 3.91 | 4.53 | 4.09 |
| More Info | See More | See More | See More |
Dae-Sung Koo ERA Per Season
Dae-Sung Koo's ERA for each season of his MLB career, plotted against that year's league average. Switch between comparisons — National League, Hall of Fame, RP, Asia, or players born in the same country — to see how he stacked up year by year.
Dae-Sung Koo ERA by Team
Dae-Sung Koo's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Dae-Sung Koo ERA Year-Over-Year Change
A waterfall chart tracking how Dae-Sung Koo'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.
Dae-Sung Koo ERA Distribution vs. Comparable Players
Each box summarizes Dae-Sung Koo'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.
Dae-Sung Koo ERA — Season-by-Season Breakdown
Every season of Dae-Sung Koo'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.
