- Sep 1 1st US Open Women's Golf, Spokane CC: Patty Berg wins inaugural Open and only one played in match play format; takes 36-hole final 5 & 4 over Betty Jameson
- Sep 1 Greece votes for monarchy
Historic Event
Sep 2 Jawaharlal Nehru forms government in India
- Sep 5 "Yours Is My Heart", an adaptation of Franz Lehar's operetta "The Land of Smiles", opens at Shubert Theater, NYC; runs for 36 performances
- Sep 5 Joe Garagiola plays his 1st major league baseball game, in his hometown of St. Louis; 2 RBI's in Cardinals' win over Chicago Cubs
- Sep 6 All-America Football Conference begins regular season play as the Cleveland Browns beat the Miami Seahawks 44-0 before 60,135 at Cleveland's Municipal Stadium
Historic Event
Sep 6 Terence Rattigan's "The Winslow Boy" premieres in London
- Sep 8 Bill Kennedy of Rocky Mount (CPL) strikes out minors record 456
- Sep 8 Bulgaria ends its monarchy
- Sep 8 San Francisco 49ers play 1st AAFC game, lose to NY Yankees 21-7
US Men's Tennis Open
Sep 8 US National Championship Men's Tennis, Forest Hills, NY: Jack Kramer beats fellow American Tom Brown Jr. 9-7, 6-3, 6-0 for his first of 2 straight US singles crowns
- Sep 8 US National Championship Women's Tennis, Forest Hills, NY: In an all-American final Pauline Betz Addie beats Patricia Canning Todd 11-9, 6-3 for her 4th and last US singles title
- Sep 11 1st mobile long-distance car-to-car telephone conversation
- Sep 12 Court martial convicts Henry de Man to 20 years, in Brussels
- Sep 13 Boston Red Sox clinch AL pennant
- Sep 15 Dodgers beat Cubs 2-0 in 5 inns, games called because of gnats
- Sep 17 Arthur Kay's musical revue of highlights from Victor Herbert operettas "Gypsy Lady" opens at Century Theater, NYC; runs for 79 performances
- Sep 17 David Raksin and June Carroll's musical "If the Shoe Fits", featuring Gail Adams and Joe Besser, opens at Century Theater ,NYC; runs for 20 performances
- Sep 27 King George II of Greece returns from exile to Athens
- Sep 29 "Adventures of Sam Spade" debuts on CBS Radio
- Sep 29 1st time NL pennant ends in a tie (Cards & Dodgers)
- Sep 29 Al Couture knockouts Ralph Walton in Lewiston Maine in 10 secs
- Sep 29 Los Angeles (previously Cleveland) Rams play 1st NFL game in LA
- Sep 29 NPS, Nationale Party Suriname, forms
Nuremberg Trials
Sep 30 Twenty-two Nazi leaders, including Joachim von Ribbentrop and Hermann Goering, are found guilty of war crimes and sentenced to death or prison at the Nuremberg war trials
