- Sep 1 Jerome Travers establishes a US Amateur Golf Championship record by downing George Crump, 14 & 13, in a 1st-round match at the Country Club of Detroit in Grosse Pointe Farms, Michigan
- Sep 8 US National Championship Men's Tennis, Forest Hills, NY: William Johnston beats Maurice McLoughlin 1-6, 6-0, 7-5, 10-8 in first US event held at West Side Tennis Club, Forest Hills, New York
- Sep 22 Boston Red Sox ask Boston Braves for use of Braves Field (10,000+ capacity) for Baseball World Series against Philadelphia Phillies
- Sep 29 Philadelphia Phillies clinch their 1st pennant
- Sep 30 Red Sox clinch AL pennant by beating Detroit