US Men's Tennis Open
Sep 1 US National Championship Men's Tennis, Newport, R.I.: R. Norris Williams wins his first major title beating defending champion Maurice McLoughlin 6-3, 8-6, 10-8; final event at Newport Casino, moves to Forest Hills, NY
- Sep 9 Boston Brave George Davis no-hits Philadelphia Phillies, 7-0
- Sep 12 Yankee shortstop Roger Peckinpaugh, 23, becomes youngest manager
- Sep 23 Reds drop their 19th straight game, then beat Boston Braves
- Sep 27 Cleveland 2nd baseman Nap Lajoie collects his 3,000th hit
- Sep 29 Boston Braves, who were in last place in mid-July, clinch NL pennant