No cause of death was provided, ESPN reported. He was the younger brother of major leaguer Jason Giambi.
Giambi spent six seasons in the majors, including two seasons in Oakland with his brother during the 2000 and 2001 seasons. He also played for the Kansas City Royals, Philadelphia Phillies and Boston Red Sox according to Baseball-reference.com.
Jeremy Giambi played in the majors from 1998 to 2003.
He was part of the 2002 Oakland squad that was featured in author Michael Lewis’ 2003 bestseller, “Moneyball,” ESPN reported.
Jeremy Giambi was traded during that season to Philadelphia for John Mabry.
“We are heartbroken to learn of the passing of a member of our Green and Gold family, Jeremy Giambi,” the A’s said in a statement. “We offer our condolences to Jeanne, Jason, and his family and friends.”
Jeremy Giambi was probably best known for being the victim of the “flip play” during Game 3 of the 2002 American League Division Series between Oakland and the New York Yankees. New York was leading 1-0 when Giambi attempted to score on an extra-base hit.
He did not slide when the throw missed two cutoff men, but was tagged out when Derek Jeter got to the ball and flipped it to catcher Jorge Posada to preserve New York’s lead. The Yankees went on to win the game and the series.
Photos: Jeremy Giambi through the years Former major league baseball player Jeremy Giambi died Wednesday, Feb. 9, 2022, at his Southern California home, according to his agent, Joel Wolfe. He was 47. (Eliot J. Schechter/Getty Images)
Photos: Jeremy Giambi through the years 1996: Jeremy Giambi (left) of the Cal State Fullerton Titans is congratulated by his teammate Tony Martinez (right) after scoring on March 31, 1996. (Robert Lachman/Los Angeles Times via Getty Images)
Photos: Jeremy Giambi through the years 1999: Outfielder Jeremy Giambi of the Kansas City Royals poses for the camera on Photo Day during Spring Training at the Baseball City Stadium in Davenport, Florida, on March 3, 1999. (Scott Halleran/Getty Images)
Photos: Jeremy Giambi through the years 2000: Jeremy Giambi of the Oakland Athletics swings at the ball during the Spring Training Game against the Seattle Mariners at Peoria Stadium in Peoria, Arizona, on March 14, 2000. (Donald Miralle/Getty Images)
Photos: Jeremy Giambi through the years 2001: Jeremy Giambi of the Oakland A's is tagged out by Jorge Posada of the New York Yankees during game three of the American League Divisional Series at the Network Associaties Ceolesium in Oakland, California, on Oct. 13, 2001. (Jed Jacobsohn/ALLSPORT via Getty Images)
Photos: Jeremy Giambi through the years 2002: Jeremy Giambi of the Oakland A's prepares tp bat against the Seattle Mariners during the game at Safeco Field in Seattle on April 7, 2002. The A's won 6-5. (Otto Greule/Getty Images)
Photos: Jeremy Giambi through the years 2003: Jeremy Giambi of the Boston Red Sox poses for a portrait during the Red Sox spring training Media Day on February 23, 2003, at Ed Smith Stadium in Sarasota, Florida. (Craig Jones/Getty Images)
Photos: Jeremy Giambi through the years 2004: Outfielder Jeremy Giambi of the Los Angeles Dodgers during photo day February 27, 2004, at Holman Stadium in Vero Beach, Florida. (Eliot J. Schechter/Getty Images)
Photos: Jeremy Giambi through the years 2011: Major League Baseball player Jason Giambi (right) and his brother Jeremy Giambi leave federal court after testifying during Barry Bonds' perjury trial on March 29, 2011, in San Francisco. (Justin Sullivan/Getty Images)
Photos: Jeremy Giambi through the years 2015: Former Major Leaguer and South Hills baseball player Jeremy Giambi, center, with his parents John and Jeanne Giambi, as his jersey is retired at South Hills High School in West Covina, Calif., on Tuesday, January 13, 2015. (Keith Birmingham/MediaNews Group/Pasadena Star-News via Getty Images)