US Men's Tennis Open
Sep 3 US National Championship Men's Tennis, Forest Hills NY: Robert Lindley Murray successfully defends title; beats Bill Tilden 6-3, 6-1, 7-5
- Sep 5 Due to WWI, 15th Baseball World Series begins a month early; Boston Red Sox defeat Chicago Cubs, 1-0 at Comiskey Park
- Sep 10 Boston Red Sox and Chicago Cubs players threaten to boycott the World Series unless they are guaranteed $2,500 to the winners & $1,000 each for the losers
- Sep 11 Baseball World Series: Boston Red Sox beat Chicago Cubs, 2-1 at Fenway Park for 4-2 series win; Sox 5th WS title
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