Coleman pitched in the
National League in 13 games in 1897 for the
St. Louis Browns at age 20, and one game in 1898 for the
Cincinnati Reds. He made his MLB debut on July 2, 1897, when he came on in relief in the sixth inning of a 13-1 Browns loss on the road vs. the
Cleveland Spiders, allowing 4 runs in 4 innings. His final game was on October 1, 1898; the
Cincinnati Enquirer story reported "Coleman pitched fairly good ball" with 6 innings giving up just one run before tiring in the seventh in a 7-3 complete-game loss to St. Louis. His overall MLB record was 1–3 with a 6.69
earned run average. In 37 official plate appearances, he had seven hits for a .226
batting average. After his big-league career ended, he compiled a record of 22–18 in three seasons (1898–1900) in the minor leagues in
Grand Rapids, Michigan,
Savannah, Georgia,
Birmingham, Alabama,
San Antonio, Texas and
Portsmouth, Virginia. By far his best season was 1899 at age 22 for the
San Antonio Bronchos in the Class C
Texas League as he led the team in wins with a 13–8 record, starting 21 games and completing 20 with 183 innings pitched. He also played 45 games in the outfield and 5 at first base, batting .338 with 100 hits in 296 plate appearances. On July 10, 1899, Coleman "of the defunct San Antonio ball team accepted an offer from the Buffalo team of the Western league at $150 per month." The following year, 1900, was his last in pro baseball as he went 6–4 with a 1.05 ERA for the Portsmouth Boers of the Class D Virginia League. He batted .211 in 57 at-bats. ==Personal life==