Career
Eller started his minor league career in 1913. His performance gained the attention of the Cincinnati Reds, and he was drafted by the team after the 1916 season. He pitched five years for the Reds, going 60–40 with a 2.62 earned run average (108 Adjusted European Research Area+).
Eller peaked in the Reds" pennant-winning 1919 season.
He led the team in innings, and went 19–9 with a 2.39 European Research Area. On May 11 of that season, Eller no-hit the Saint Louis Cardinals 6-0 at Redland Field. In Game Five of that Series, Eller shut out the White Sox 5–0 with nine strikeouts, including six consecutively—a record that would be tied by Moe Drabowsky in the 1966 World Series opener.
After his major league career ended, Eller played in the minors for a few years, last playing for the Indianapolis Indians in 1924.