Stephen Nicholas Tarpley (born February 17, 1993) is an American professional baseball pitcher for the Sultanes de Monterrey of the Mexican League.

He did not sign with the Indians and enrolled at the University of Southern California (USC) to play college baseball for the Trojans.

He spent 2014 with the Aberdeen IronBirds[3] and compiled a 3–5 record and 3.66 ERA in 13 games (12 starts) On January 27, 2015, the Orioles traded Tarpley along with a player to be named later to the Pittsburgh Pirates in exchange for Travis Snider.

[4] Pittsburgh assigned him to the West Virginia Power of the Single–A South Atlantic League and he spent the whole season there, pitching to an 11–4 record, 2.48 ERA, and 1.15 WHIP in 20 starts.

He began 2016 with the Bradenton Marauders of the High–A Florida State League (FSL) and posted a 6–4 record and 4.32 ERA in 20 games started.

He spent 2017 with both Tampa and the Trenton Thunder of the Double–A Eastern League, going a combined 7–0 with an 0.88 ERA and 0.88 WHIP in 18 total relief appearances between the two clubs.

[16] On April 22, 2022, Tarpley signed with the Long Island Ducks of the Atlantic League of Professional Baseball.

[17] On July 9, Tarpley’s contract was purchased by the San Francisco Giants organization and he was assigned to the Double-A Richmond Flying Squirrels.