Moses J. Yellowhorse[a] (January 28, 1898 – April 10, 1964) was a Native American professional baseball pitcher from Oklahoma.

[1] Moses hunted to help feed his family and rode in Pawnee Bill's Wild West Show with his father.

[2] After Yellowhorse left Chilocco, he went to pitch for the Little Rock Travelers of the minor league Southern Association.

[2] Over his two-year stay with the Pirates, Yellowhorse was used primarily as a reliever and compiled a record of 8 wins and 4 losses.

The relationship had a profound impact on his life as Maranville introduced Yellowhorse to alcohol; he began to drink substantial amounts of liquor frequently.

Yellowhorse also served as groundskeeper for the Ponca City ballclub in 1947 and coached an all-Indian baseball team.

Eventually, his relationship with the tribe improved and he became an honored member; a sports field was named after him in Pawnee, Oklahoma.

Gould used Yellowhorse in his Dick Tracy comic strip as the model for a character named Yellow Pony.

Other than the name, the only real similarity between live model and comic strip character was a big, strong physique.