How Mike O'Connor's ERA Compares to Similar Players

Mike O'Connor posted a career ERA of 5.3, well above the starting pitcher average of 3.87 — production that significantly underperformed against league baselines. Across 3 seasons, the ERA arc showed a disappointing start, with limited data making longer-term conclusions premature. With 3 seasons of data, the ERA arc was below league norms — too limited for reliable trend analysis. Significant season-to-season variance characterizes the ERA profile — ranging from 2.7 to 13.0 — though the career average remained well below league norms.

Mike O'Connor Lifetime ERA and Similar Stats

Stats similar to ERA for Mike O'Connor
Mike O'Connor
ERA
Mike O'Connor
Component ERA
Mike O'Connor
Defense Independent ERA
Career5.34.555.43
Season Avg.5.34.555.43
162 Game Avg.5.34.555.43
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Mike O'Connor ERA Per Season

Mike O'Connor'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.
Mike O'Connor ERA per season line chart

Mike O'Connor ERA by Team

Mike O'Connor's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Mike O'Connor career ERA by team bar chart

Mike O'Connor ERA Year-Over-Year Change

A waterfall chart tracking how Mike O'Connor'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.
Mike O'Connor ERA year-over-year waterfall chart

Mike O'Connor ERA Distribution vs. Comparable Players

Each box summarizes Mike O'Connor'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.
Mike O'Connor ERA distribution box chart versus comparable players

Mike O'Connor ERA — Season-by-Season Breakdown

Every season of Mike O'Connor'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.
Mike O'Connor ERA season-by-season breakdown table