Alonzo Albert Mattern (June 16, 1883 – November 6, 1958) was a professional baseball player who pitched in the Major Leagues from 1908 to 1912. He played for the Boston Braves.

Al Mattern
Pitcher
Born: (1883-06-16)June 16, 1883
West Rush, New York, U.S.
Died: November 6, 1958(1958-11-06) (aged 75)
West Rush, New York, U.S.
Batted: Left
Threw: Left
MLB debut
September 16, 1908, for the Boston Doves
Last MLB appearance
April 19, 1912, for the Boston Braves
MLB statistics
Win–loss record36–58
Earned run average3.37
Strikeouts254
Stats at Baseball Reference Edit this at Wikidata
Teams
edit