Fernando Antonio Abad (/ˈeɪbæd/; born December 17, 1985) is a Dominican professional baseball pitcher for the Saraperos de Saltillo of the Mexican League.

He has previously played in Major League Baseball (MLB) for the Houston Astros, Washington Nationals, Oakland Athletics, Minnesota Twins, Boston Red Sox, San Francisco Giants, Baltimore Orioles, and Colorado Rockies.

[3] He was called up to the big leagues when Ryan Mattheus was placed on the disabled list and he posted a 3.35 ERA in 37+2⁄3 innings out of the bullpen.

On November 25, 2013, the Nationals traded Abad to the Oakland Athletics for minor league outfielder John Wooten.

[10] On February 17, 2018, Abad agreed to a minor league contract with the Philadelphia Phillies that included an invitation to spring training.

[12] On June 7, Abad was suspended 80 games after testing positive for Stanozolol, a performance-enhancing substance and was released by the Mets upon the announcement of the news.

[13] On August 3, 2018, Abad signed with the Long Island Ducks of the Atlantic League of Professional Baseball.

On February 16, 2019, Abad signed a minor league contract with the San Francisco Giants organization.

[14] In 41 appearances split between the Double–A Richmond Flying Squirrels and Triple–A Sacramento River Cats, he compiled a 2.70 ERA with 55 strikeouts and 13 saves over 50 innings pitched.

[16] On December 18, 2019, Abad returned to the Washington Nationals, signing a minor league contract with the organization.

After posting a 4.26 ERA with 27 strikeouts in 26 appearances for the Triple-A Norfolk Tides, the Orioles selected Abad's contract on August 15, 2021.

He was assigned to the Triple-A Tacoma Rainiers, with whom he recorded a 3.56 ERA in 40 appearances, striking out 32 batters in 43 innings pitched.

[23] He was assigned to the Triple-A Albuquerque Isotopes to begin the year, where he pitched to a 1.69 ERA with 20 strikeouts and 2 saves across 13 appearances.

[30] After posting a 4.26 ERA across 6 appearances, Abad was designated for assignment on July 19, after Brent Suter was activated from the injured list.