Indianapolis Athletics Earned Run Average Leaders
Career totals with the Indianapolis Athletics and the best single seasons in club history. Includes the 2026 season through September 17: these records are rebuilt every night, so a mark set yesterday is here this morning.
The single-season record is 4.60, by Leo Hannibal in 1937.
Rate records use the league's own minimums: a season needs the standard 1.0 inning per team game with the club, a career 1,000+ innings pitched with the club.
All-time Indianapolis Athletics leaders
Career totals with the clubNo qualifying careers on record.
Single-season Indianapolis Athletics records
Best seasons in club history| # | Player | Season | ERA | G |
|---|---|---|---|---|
| 1 | Leo Hannibal | 1937 | 4.60 | 7 |