1939 Earned Run Average Leaders Top 25 in the American League
Name	Earned Run Average	Team	Rank
Lefty Grove	2.54 (2.5445)	Boston Red Sox	1
Ted Lyons	2.76 (2.7625)	Chicago White Sox	2
Bob Feller	2.85 (2.8517)	Cleveland Indians	3
Red Ruffing	2.93 (2.9314)	New York Yankees	4
Bump Hadley	2.98 (2.9805)	New York Yankees	5
Lefty Gomez	3.41 (3.4091)	New York Yankees	6
Tommy Bridges	3.50 (3.5000)	Detroit Tigers	7
Mel Harder	3.50 (3.5048)	Cleveland Indians	8
Dutch Leonard	3.54 (3.5421)	Washington Senators	9
Bobo Newsom	3.58 (3.5794)	St. Louis Browns	10
		Detroit Tigers
Dizzy Trout	3.61 (3.6111)	Detroit Tigers	11
Johnny Rigney	3.70 (3.7043)	Chicago White Sox	12
Atley Donald	3.71 (3.7059)	New York Yankees	13
Al Milnar	3.79 (3.7895)	Cleveland Indians	14
Eddie Smith	3.79 (3.7930)	Philadelphia Athletics	15
		Chicago White Sox
Ken Chase	3.80 (3.8017)	Washington Senators	16
Thornton Lee	4.21 (4.2128)	Chicago White Sox	17
Fritz Ostermueller	4.24 (4.2364)	Boston Red Sox	18
Johnny Allen	4.58 (4.5771)	Cleveland Indians	19
Joe Krakauskas	4.60 (4.5966)	Washington Senators	20
Jack Wilson	4.67 (4.6692)	Boston Red Sox	21
Alex Carrasquel	4.69 (4.6883)	Washington Senators	22
Lynn Nelson	4.78 (4.7808)	Philadelphia Athletics	23
Schoolboy Rowe	4.99 (4.9939)	Detroit Tigers	24
Roxie Lawson	5.28 (5.2778)	Detroit Tigers	25
		St. Louis Browns
Name	Earned Run Average	Team	Rank

	Did you know that more than forty players have worn the number twenty-five for the Boston Red Sox — including Jack Clark, Denny Galehouse, Dizzy Trout and Tony Conigliaro. Jim Thome wore number twenty-five since he first came up with the Cleveland Indians making him the franchise record holder for that particular number (Mike Garcia is second). The first player from the Angels franchise (they were the California Angels at the time) to wear the number twenty-five was Bob Perry.