Samuel Onofrio Haggerty (born May 26, 1994) is an American professional baseball outfielder in the Texas Rangers organization.

He has previously played in Major League Baseball (MLB) for the New York Mets and Seattle Mariners.

Haggerty began his minor league career in 2015 with the Mahoning Valley Scrappers, hitting .283/.361/.453/ with 1 home run and 7 RBI.

[9] On January 6, 2019, Haggerty and pitcher Walker Lockett were traded to the New York Mets for catcher Kevin Plawecki.

[13][14] He made his major league debut on September 4 as a pinch runner versus the Washington Nationals.

[18] In his first at bat with the Mariners on August 19, 25 games into the shortened 2020 season, he got his first MLB hit, a single off Julio Urias of the Los Angeles Dodgers.

[23] On April 13, 2021, Haggerty hit a home run onto Eutaw Street in Camden Yards in Baltimore,[24] the first Mariner to do so since Ken Griffey Jr. in 1994.

[25][26] On May 5, Haggerty prevented the Mariners from being the victims of a perfect game by Baltimore Orioles pitcher John Means.

[30] Haggerty played in 52 games for Seattle in 2023, batting .253/.364/.341 with one home run, five RBI, and ten stolen bases.

[32] Haggerty began the 2024 season on the injured list as the result of a personal medical issue unrelated to baseball.

On May 18, he suffered a torn Achilles tendon while trying to catch a fly ball and colliding with the outfield fence.

The move opened a roster spot for the Mariners, used to promote Ryan Bliss, and allowed Haggerty to accrue MLB service time.