Seymour is the only player apart from Babe Ruth to finish his career with at least 50 home runs (HR) and 50 pitching wins.

Seymour played semi-professional baseball in Plattsburgh, New York, receiving a monthly salary of $1,000 ($36,624 in current dollar terms).

Orioles manager John McGraw later said that Seymour deserved the title of "Iron Man" more than Joe McGinnity.

[1] Seymour was briefly demoted to the minor leagues after walking 11 batters in a victory against the St. Louis Perfectos on June 7, 1900.

[1] Seymour last pitched for the Giants that season, at which point he converted into an outfielder full-time due to injury from throwing the screwball.

Joe Kelley, star player for the Orioles and son-in-law of part-owner John Mahon, reported that the team owed as much as $12,000 ($422,585 in current dollar terms).

That day, Freedman and Brush released Seymour, McGraw, Kelley, McGinnity, Roger Bresnahan, Jack Cronin, and Dan McGann from their Oriole contracts.

[1] He set a record with four sacrifice bunts in one game on July 25, 1902; this mark was tied by Jake Daubert on August 15, 1914.

[13] The Giants purchased Seymour from the Reds on July 12, 1906 for $10,000 ($339,111 in current dollar terms), the largest monetary transaction in baseball to date.

[1] Seymour attempted to hold out from the Giants in order to obtain a portion of this transfer fee, claiming that Herrmann had promised him this money if the sale was completed.

That year, he participated in one of baseball's most infamous plays, known as Merkle's Boner, in which the Giants lost the pennant to the Chicago Cubs.

[30] Few players enjoyed as much success as Seymour as both a pitcher and hitter; only Babe Ruth recorded more combined pitching victories and hits.

Orioles catcher Wilbert Robinson said that he had never caught a pitcher as wild as Seymour, as opposing batters did "not know whether their head or feet were in most danger.

[12] The New York World listed Seymour as one of the best players in baseball, along with Mathewson, Ed Walsh, Honus Wagner, Nap Lajoie, and Roger Bresnahan.

"[1] According to a formula for evaluating baseball players developed by Bill James, Seymour ranks above Hall of Famers Lloyd Waner, Jimmy Collins, and Joe Tinker.