Matthew William Reynolds (born December 3, 1990) is an American professional baseball infielder who is a free agent.

He has previously played in Major League Baseball (MLB) for the New York Mets, Washington Nationals, Kansas City Royals, and Cincinnati Reds.

[5] He made his professional debut that season for the Savannah Sand Gnats of the A-level South Atlantic League, hitting .259 with 3 home runs in 42 games.

Reynolds started the 2014 season back with Binghamton and was promoted to the Triple-A Las Vegas 51s after hitting .355 in 58 games.

Reynolds spent the 2015 regular season in Triple-A before being called up to the Mets during the 2015 NLDS to replace the injured Rubén Tejada.

[8] In doing so, he became the first player in modern baseball history to be added to a postseason roster in the middle of a series without previous major-league experience.

He also became the third player in modern baseball history to be included on a postseason roster without previous major-league experience, after Chet Trail (of the New York Yankees in the 1964 World Series (not on the active roster)) and Mark Kiger (of the Oakland Athletics in the 2006 American League Championship Series).

On May 25, Reynolds picked up his first major league hit, a single, against Nationals' pitcher Tanner Roark.

[15] In a June 22 game, Reynolds started and appeared in the outfield for the first time in his professional career and also hit his first Major League home run, off of reliever Joakim Soria.

[20] He began the season with the Triple–A Syracuse Chiefs, but the Nationals called him up to the major leagues on April 7.

The Nationals designated Reynolds for assignment on January 13, 2019, clearing a roster spot for newly signed second baseman Brian Dozier.

[29] On December 17, 2020, Reynolds signed a minor league contract with the Chicago White Sox organization.

[31] On April 20, Reynolds was designated for assignment to make room for Mark Canha returning from the COVID-19 injured list.