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SPORTS

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Major League Baseball (MLB) *Player Records*

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Best Earned Run Average

This list features the players with the best earned run average in Major League Baseball (MLB) history.

RANK

PLAYERS

MATCHES

AVG.

TEAM(s)

YEARS

1

Ed Walsh

430

1.82

Chicago White Sox

1904–1917

2

Addie Joss

286

1.89

Cleveland Naps

1902–1910

3

Mordecai Brown

481

2.06

Chicago Cubs, St. Louis Cardinals

1903–1916

4

John Ward

293

2.10

Providence Grays, Boston Beaneaters

1884–1890

5

Christy Mathewson

636

2.13

New York Giants

1900–1916

6

Rube Waddell

407

2.16

Philadelphia Athletics, St. Louis Browns, Chicago White Sox

1897–1910

7

Walter Johnson

802

2.17

Washington Senators

1907–1927

8

Tommy Bond

322

2.25

Boston Red Caps, Washington Nationals, Chicago White Stockings

1874–1884

9

Orval Overall

218

2.26

Chicago Cubs

1905–1913

10

Will White

403

2.28

Cincinnati Red Stockings

1871–1884

11

Ed Reulbach

399

2.28

Chicago Cubs

1902–1917


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References

StatMuse (2025) Which MLB player has the best earned run average all-time. Available at: https://www.statmuse.com/mlb/ask?q=which+mlb+player+best+earned+run+average+all-time (Accessed: 1 December 2025). Baseball Reference (2025) Career Leaders & Records for Earned Run Average. Available at: https://www.baseball-reference.com/leaders/earned_run_avg_career.shtml (Accessed: 1 December 2025).
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