He played for the Salt Lake City Bees, the Sacramento Senators, and the Seattle Indians of the Pacific Coast League (PCL) from 1916 to 1930.

[1] When he was fully grown, Eldred stood 5 feet 6 inches (1.68 m) tall and weighed approximately 180 pounds (82 kg), earning him the nickname "Brick".

[2] After playing semi-professional baseball, Eldred signed with the Salt Lake City Bees of the Pacific Coast League (PCL) after the 1915 season.

[4] With Salt Lake City unable to get Eldred playing time,[5] they traded him to the Seattle Giants of the Northwestern League in June.

[8] In 1917, Eldred reported to spring training with the White Sox and competed to become the starting right fielder against Nemo Leibold, Eddie Murphy, Jack Fournier, and Shano Collins.

[10] However, Danny Shay, the manager of the Milwaukee Brewers of the American Association, claimed that he had bought Eldred from Seattle, and appealed to the National Baseball Commission.

Eldred petitioned Garry Herrmann, the head of the National Commission, to gain his release from the White Sox organization.

[19] In May 1920, Bill Rodgers, the manager of the Senators, fined Eldred $25 ($380 in current dollar terms[20]) for using disrespectful language towards him and another $25 for not hustling on the field.

[35] At the end of April, Seattle sold him to the Wichita Falls Spudders of the Class A Texas League[36] for $5,000 ($88,721 in current dollar terms) after he had cleared waivers in the PCL.

[44] In his career, Eldred played in 1,709 PCL games, finishing with a .332 batting average, 2,034 hits, 516 doubles, and 219 stolen bases.