- Sep 9 Silvio Cator of Haiti, sets then long jump record at 26' ½"
- Sep 11 Ty Cobb last hitting appearance, pops out against Yankees
- Sep 15 Kent leg-spinner Alfred "Tich" Freeman takes 2-102 and 4-75 for Rest of England vs Lancashire to become the only bowler to take 300 wickets (304) in an English cricket season
- Sep 15 St. Louis Cardinals set NL record of 18 men left-on-base; still beat Phillies, 8-6 at the Baker Bowl, Philadelphia
- Sep 17 Boston Braves pitcher Ray Boggs hits 3 batters in 1 inning during his 4th and final major league appearance, in 15-5 loss to Chicago Cubs
US Men's Tennis Open
Sep 17 US National Championship Men's Tennis: Frenchman Henri Cochet wins his only US title; beats American Frank Hunter 4-6, 6-4, 3-6, 7-5, 6-3