Kentucky Derby
May 3 112th Kentucky Derby: Bill Shoemaker aboard Ferdinand wins in 2:02.8
- May 3 Cubs 3rd baseman Ron Cey hits his 300th & 301st HR
Sports History
May 3 New York Yankees Don Mattingly is 6th to hit 3 sacrifice flies in a game
- May 7 30th European Cup: Steaua Bucuresti beats Barcelona (0-0, 2-0 on penalties) at Seville
- May 7 Phillies outfielder Garry Maddox, retires
- May 9 NHL Prince of Wales Conference Final: Montreal Canadians beat New York Rangers, 4 games to 1
- May 14 NHL Clarence Campbell Conference Final: Calgary Flames beat St. Louis Blues, 4 games to 3
Sports History
May 14 Reggie Jackson hit his 537th HR passing Mickey Mantle into 6th place
Baseball Record
May 25 KC Royal George Brett gets his 2,000th hit
- May 28 White Sox Joe Cowley sets record striking out 1st 7 Rangers he faces
Barry Bonds Debut
May 30 Barry Bonds makes his MLB debut for the Pittsburgh Pirates
- May 30 Indianapolis 500: Bobby Rahal becomes first driver in race history to complete the 500 miles (800 km) in less than 3 hours; average speed 170.722 mph (274.750 km/h)