The record for May 9 in baseball history — 6 milestones, 15 debuts, 25 final games, 59 births, 21 deaths and 1,217 games played.
Dallas Braden threw a perfect game for the Oakland Athletics against the Tampa Bay Rays on May 9, 2010, winning 4–0.
Alex Kampouris hit three home runs for the Cincinnati Reds against the Philadelphia Phillies on May 9, 1937.
Johnny Bench hit three home runs for the Cincinnati Reds against the Philadelphia Phillies on May 9, 1973.
Mark Grace hit for the cycle for the Chicago Cubs against the San Diego Padres on May 9, 1993.
Dallas Braden threw a perfect game for the Oakland Athletics against the Tampa Bay Rays on May 9, 2010, winning 4–0.
Jordan Diaz hit three home runs for the Oakland Athletics against the New York Yankees on May 9, 2023.
Jasson Domínguez hit three home runs for the New York Yankees against the Athletics on May 9, 2025.
Mike McGeary made a major-league debut on May 9, 1871.
Lip Pike made a major-league debut on May 9, 1871.
Tom York made a major-league debut on May 9, 1871.
Frank Scheibeck made a major-league debut on May 9, 1887.
Amos Rusie made a major-league debut on May 9, 1889.
Howie Shanks made a major-league debut on May 9, 1912.
Wally Schang made a major-league debut on May 9, 1913.
Jerry Moses made a major-league debut on May 9, 1965.
Bruce Sutter made a major-league debut on May 9, 1976.
Troy O'Leary made a major-league debut on May 9, 1993.
Ugueth Urbina made a major-league debut on May 9, 1995.
Jamie Burke made a major-league debut on May 9, 2001.
Dontrelle Willis made a major-league debut on May 9, 2003.
Casey Kotchman made a major-league debut on May 9, 2004.
Juan Carlos Oviedo made a major-league debut on May 9, 2005.
Theodore Breitenstein played a final major-league game on May 9, 1901.
Larry Woodall played a final major-league game on May 9, 1929.
Ike Boone played a final major-league game on May 9, 1932.
Watson Clark played a final major-league game on May 9, 1937.
Roy Spencer played a final major-league game on May 9, 1938.
Nick Etten played a final major-league game on May 9, 1947.
Don Gutteridge played a final major-league game on May 9, 1948.
Mule Suttles played a final major-league game on May 9, 1948.
Dom DiMaggio played a final major-league game on May 9, 1953.
Johnny Lindell played a final major-league game on May 9, 1954.
Dick Gernert played a final major-league game on May 9, 1962.
Wally Post played a final major-league game on May 9, 1964.
Yogi Berra played a final major-league game on May 9, 1965.
Roy Sievers played a final major-league game on May 9, 1965.
Tom Cheney played a final major-league game on May 9, 1966.
Chuck Cottier played a final major-league game on May 9, 1969.
Alan Ashby played a final major-league game on May 9, 1989.
Carmelo Castillo played a final major-league game on May 9, 1991.
Billy Hatcher played a final major-league game on May 9, 1995.
Dean Palmer played a final major-league game on May 9, 2003.
Danny Graves played a final major-league game on May 9, 2006.
Chad Fox played a final major-league game on May 9, 2009.
Nelson Figueroa played a final major-league game on May 9, 2011.
Todd Frazier played a final major-league game on May 9, 2021.
Robbie Erlin played a final major-league game on May 9, 2022.
Milwaukee Brewers 3, Tampa Bay Rays 4.
Toronto Blue Jays 6, Seattle Mariners 3.
San Francisco Giants 1, Minnesota Twins 3.
Boston Red Sox 1, Kansas City Royals 2.
Cincinnati Reds 0, Houston Astros 3.
Texas Rangers 1, Detroit Tigers 2.
Philadelphia Phillies 0, Cleveland Guardians 6.
Miami Marlins 2, Chicago White Sox 6.
Baltimore Orioles 4, Los Angeles Angels of Anaheim 1.
St. Louis Cardinals 10, Washington Nationals 0.
Atlanta Braves 2, Pittsburgh Pirates 3.
Chicago Cubs 2, New York Mets 7.
These are the 12 most recent of 1,217 games played on this date. The sections above lead with what made the day matter.
59 players were born on May 9; these are the 24 best known.