Satchel Paige Debut
May 1 Baseball Hall of Fame pitcher Satchel Paige (19) debuts in the Negro Southern League for Chattanooga
1st Wrigley Field Scoreboard HR
May 23 Chicago Cub's Hack Wilson is 1st to hit a home run off Wrigley Field scoreboard
Paavo Nurmi Sets Record
May 24 Finnish runner Paavo Nurmi sets world 3000m record (8:25.4) in Berlin, Germany
- May 31 Indianapolis 500: First rain-shortened race in "500" history; Frank Lockhart wins after 20 lap duel with Dave Lewis; race called after 400 miles (160 laps)