Yrigoyen Deposed in Coup
Sep 6 Democratically elected Argentine president Hipólito Yrigoyen is deposed in a military coup.
- Sep 13 50th US National Championship Men's Tennis, Forest Hills NY: John Doeg beats Frank Shields 10-8, 1-6, 6-4, 16-14 for his lone major singles title
World Record 20,000m
Sep 13 Paavo Nurmi runs world record 20,000m (1:04:38.4)
PGA Championship
Sep 13 PGA Championship Men's Golf, Fresh Meadow CC: American based Scotsman Tommy Armour defeats Gene Sarazen 1-up in the final for the second of his 3 major titles
- Sep 13 Winnipeg Rugby Football Club 1st game, loses to St John's Rugby, 7-3
- Sep 14 Detroit Lions (as Portsmouth Spartans) play 1st NFL game, win 13-6
- Sep 14 Nazis gain 107 seats in German election
- Sep 15 1st international bridge match is held in London. US team defeats England
- Sep 16 Phillies trailing 10-5, score 5 in 9th, then Pirates score 4 in top of 10th, so Phillies score 5 in bottom of 10th to win 15-14
- Sep 18 Enterprise (US) beats Shamrock V (UK) in 15th America's Cup
Baseball Record
Sep 18 NY Yankee future Baseball HOF pitcher Red Ruffing hits 2 HRs to beat St Louis Browns, 7-6 at Sportsman's Park, St. Louis
Private Lives
Sep 24 Noël Coward's play "Private Lives" premieres in London
- Sep 24 Portsmouth beats Brooklyn in 1st NFL game played under floodlights
- Sep 25 Austrian government of Vaugoin forms
- Sep 25 Zoe Akins' "Greeks Had a Word for it" premieres in NYC
Baseball Record
Sep 27 Chicago Cub's Hack Wilson's 2 HRs give him NL record 56 HRs
- Sep 27 US Amateur Championship Men's Golf, Merion GC: Bobby Jones scores an 8 & 7 win over Eugene V. Homans to win his 5th National Amateur title and clinch golf's Grand Slam
Lou Gehrig's Streak Ends
Sep 28 Lou Gehrig's errorless streak ends at 885 consecutive games
- Sep 29 1st Canadian football game played under lights, Hamilton-UBC
- Sep 29 Boquerón battle ends Paraguay border dispute
- Sep 29 Lowell Thomas makes his debut on CBS Radio replacing Floyd Gibbons
- Sep 29 NYC College offers 1st course in radio advertising
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