Matthew Lon Keough /ˈkiːoʊ/ (July 3, 1955 – May 1, 2020) was an American professional baseball player. He was born in Pomona, California.

He played in Major League Baseball (MLB) as a right-handed pitcher for the Oakland Athletics (1977–1983), New York Yankees (1983–1984), St. Louis Cardinals (1985), Chicago Cubs (1986) and Houston Astros (1986). From 1987 to 1990, he played for the Japanese baseball team Hanshin Tigers.

Keough died on May 1, 2020 at the age of 64.^[1]

• Career statistics and player information from Baseball-Reference, or Fangraphs, or Baseball-Reference (Minors)
• Matt Keough at B-R Bullpen
• Matt Keough at Baseball Library

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