- Sep 1 Pierre de Coubertin steps down as chairman of International Olympic Committee; replaced by Henri de Baillet-Latour of Belgium
Golf Tournament
Sep 5 29th US Golf Amateur Championship won by Bobby Jones
- Sep 12 20th Davis Cup: USA beats France in Philadelphia (5-0)
International Lawn Tennis Challenge
Sep 12 International Lawn Tennis Challenge, Philadelphia, PA: Vincent Richards & R. Norris Williams clinch US 6th straight title; beat Jean Borotra & René Lacoste of France 6-4, 6-4, 6-3 for 3-0 lead; ends 5-0
- Sep 13 MLB Brooklyn Robins pitcher Dazzy Vance no-hits the visiting Philadelphia Phillies, 10-1 at Ebbets Field
US Men's Tennis Open
Sep 19 US National Championship Men's Tennis, Forest Hills NY: Bill Tilden wins 6th consecutive US title; beats Bill Johnston for 4th straight year 4-6, 11-9, 6-3, 4-6, 6-3
PGA Championship
Sep 26 PGA Championship Men's Golf, Olympia Fields CC: Defending champion Walter Hagen defeats Bill Mehlhorn, 6 & 5 in the final; 3rd PGA crown overall, and 7th of his 11 major titles