How Trevor Williams's ERA Compares to Similar Players

Trevor Williams has posted a career ERA of 4.46, above the starting pitcher average of 3.87 — a level that falls short of typical league production. His strongest ERA season came in 2024, posting 2.03, well below the starting pitcher average of 4.16 that year. The highest point came in 2016 at 7.82, well above the starting pitcher average of 4.29 that year. Production has slipped over the most recent seasons. The figure has moved from 5.55 in 2023 to 2.03 in 2024 and 6.21 in 2025. The slide has continued into 2025, with the production level an open question entering 2026. Significant season-to-season variance characterizes the ERA profile — ranging from 2.03 to 7.82 — though the career average has fallen below league norms.

Trevor Williams Lifetime ERA and Similar Stats

Stats similar to ERA for Trevor Williams
Trevor Williams
ERA
Trevor Williams
Component ERA
Trevor Williams
Defense Independent ERA
Career4.464.524.32
Season Avg.4.464.524.32
162 Game Avg.4.464.524.32
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Trevor Williams ERA Per Season

Trevor Williams'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.
Trevor Williams ERA per season line chart

Trevor Williams ERA by Team

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

Trevor Williams ERA Year-Over-Year Change

A waterfall chart tracking how Trevor Williams'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.
Trevor Williams ERA year-over-year waterfall chart

Trevor Williams ERA Distribution vs. Comparable Players

Each box summarizes Trevor Williams'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.
Trevor Williams ERA distribution box chart versus comparable players

Trevor Williams ERA — Season-by-Season Breakdown

Every season of Trevor Williams'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.
Trevor Williams ERA season-by-season breakdown table