How John Costello's Losses Compares to Similar Players
John Costello totaled 6 career Losses, well below the relief pitcher average of 15.5 — a mark that ranked among the best of his era. Across 4 seasons, the Losses arc showed a promising start, with limited data making longer-term conclusions premature. With 4 seasons of data, the Losses arc was above league norms — too limited for reliable trend analysis. Significant season-to-season variance characterizes the Losses profile — ranging from 0 to 4 — though the career average remained well above league norms.
John Costello Lifetime Losses
Stats similar to Losses for John Costello
| John Costello
Losses |
|---|
| Career | 6 |
| Season Avg. | 1.5 |
| 162 Game Avg. | 8.17 |
| More Info | See More |
John Costello Losses Per Season
John Costello's Losses for each season of his MLB career, plotted against that year's league average. Switch between comparisons — National League, Hall of Fame, RP, North America, or players born in the same country — to see how he stacked up year by year.
John Costello Losses by Team
John Costello's career Losses totals broken down by each team he played for, ordered by when he first joined that team.
John Costello Cumulative Losses — Career Progression
A running total of John Costello's career Losses, plotted season by season. Each point shows the cumulative figure through the end of that year, making it easy to see when he reached key milestones and how his pace changed over time.
John Costello Losses Distribution vs. Comparable Players
Each box summarizes John Costello's seasonal Losses 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.
John Costello Losses — Season-by-Season Breakdown
Every season of John Costello's MLB career with Losses 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.
