Events in Sport
- Sep 4 US National Championship Men's Tennis, Forest Hills NY: Bill Johnston wins his second US title; beats Bill Tilden 6-4, 6-4, 6-3
- Sep 10 Indians Ray Caldwell no-hits Yankees 3-0
PGA Championship
Sep 20 PGA Championship Men's Golf, Engineers CC: Defending champion Jim Barnes defeats Fred McLeod, 6 & 5 in the final
Jim Barnes
- Sep 24 Boston Red Sox slugger Babe Ruth sets MLB season home run record at 28 off Yankee Bob Shawkey in a 2-1 loss at the Polo Grounds in NYC
- Sep 27 Pitcher Bob Shawkey sets then Yank record with 15 strike-outs
- Sep 27 Boston Red Sox slugger Babe Ruth takes his MLB home run record to 29 with a 3rd inning blast in a 7-5 defeat at the Washington Senators' Griffith Stadium
- Sep 28 Fastest major league game (51 mins), Giants beat Phillies 6-1
Birthdays in Sport
- Sep 7 Alberic Schotte, Belgian cyclist, born in Kanegem, Belgium (d. 2004)
- Sep 15 Fausto Coppi, Italian cyclist (Giro d'Italia 1940, 47, 49, 52-53; Tour de France 1949, 52; World Championship gold Individual pursuit 1947, road race 1953), born in Castellania, Italy (d. 1960)
- Sep 27 Johnny Pesky, American baseball player, (d. 2012)
- Sep 28 Tom Harmon, American College Football Hall of Fame halfback (Heisman Trophy 1940, Michigan; LA Rams) and broadcaster (CBS 1950-62), born in Rennselaer, Indiana (d. 1990)
- Sep 29 Masao Takemoto, Japan, gymnast (Olympic gold 1960)
- Sep 30 Roberto Bonomi, Argentine racing driver (d. 1992)