Zachary David Phillips (born September 21, 1986) is a Mexican-American professional baseball pitcher for the Acereros de Monclova of the Mexican League.

On July 14, 2011, the Texas Rangers designated Phillips for assignment, giving them 10 days to trade, release, or outright him to the minors.

[3] On July 19, 2011, he was traded to the Baltimore Orioles for minor league infielder Nick Green and cash.

On November 4, 2012, Phillips elected free agency after refusing his outright assignment to the Triple-A Norfolk Tides.

[11] In 49 relief outings for Norfolk, Phillips compiled a 9–3 record and 4.45 ERA with 84 strikeouts across 60+2⁄3 innings pitched.

[12] The Pittsburgh Pirates acquired Phillips from Baltimore on August 31, 2016, in exchange for left-handed pitcher Kyle Lobstein.

On June 24, 2017, Phillips signed with the Acereros de Monclova of the Mexican Baseball League.

[16] On July 13, 2022, Phillips was loaned to the Rieleros de Aguascalientes of the Mexican League for the remainder of the 2022 season.

In 2023, Phillips made 29 relief appearances for Aguascalientes, registering a 4–3 record and 4.25 ERA with 18 strikeouts and 2 saves across 29+2⁄3 innings pitched.