George "Yatz" Proeser (May 30, 1864 – October 13, 1941) was a starting pitcher and right fielder in Major League Baseball who played for the Cleveland Blues (1888) and Syracuse Stars (1890) teams of the American Association. Listed at 5 ft 10 in (1.78 m), 190 lb., Proeser batted and threw left-handed. He was born in Cincinnati.

George Proeser
Pitcher / Right fielder
Born: (1864-05-30)May 30, 1864
Cincinnati
Died: October 13, 1941(1941-10-13) (aged 77)
New Burlington, Ohio
Batted: Left
Threw: Left
MLB debut
September 15, 1888, for the Cleveland Blues
Last MLB appearance
July 10, 1890, for the Syracuse Stars
MLB statistics
Win–loss record3–4
Strikeouts20
Earned run average3.81
Batting average.263
Home runs1
RBI7
Stats at Baseball Reference Edit this at Wikidata
Teams

In a two-season career, Proeser posted a 3–4 record with a 3.81 ERA in seven pitching appearances, all complete games including one shutout, giving up 25 earned runs on 53 hits and 30 walks while striking out 20 in 59.0 innings of work. As a hitter, he collected a .263 batting average (20-for-76) with one home run and seven RBI in 20 games, including 16 runs, three doubles, one triple, one stolen base, and a .356 on-base percentage.

Proeser died in New Burlington, Ohio, at the age of 77.

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