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.

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.

• Career statistics and player information from Baseball Reference, or Baseball Reference (Minors)
• Retrosheet

This biographical article relating to an American baseball outfielder born in the 1860s is a stub. You can help Wikipedia by expanding it.

• v
• t
• e

This biographical article relating to an American baseball pitcher born in the 1860s is a stub. You can help Wikipedia by expanding it.

• v
• t
• e