Tennis Open
Sep 1 Chris Evert becomes the first player ever to win 100 matches in the US National/Open Tennis Championship by beating Patricia Tarabinia 6-2, 6-4

Chris Evert
- Sep 1 "Anything Goes" closes at Beaumont Theater NYC after 804 performances
- Sep 1 Princess Anne & Mark Phillips announce their separation
Film Premier
Sep 1 "Roger and Me", the first documentary directed by Michael Moore, premieres at the Telluride Film Festival

Michael Moore
Event of Interest
Sep 2 Reverend Al Sharpton leads a civil rights march through Bensonhurst, Brooklyn

Al Sharpton
- Sep 3 American tennis star Chris Evert beats 15-year-old Monica Seles 6-0, 6-2 in a 4th round match for her 101st and last US Open singles victory
- Sep 3 "Into the Woods" closes at Martin Beck Theater NYC after 764 performances
- Sep 3 Iljushin-62 crashes down on residential area of Havana, 170 die
Event of Interest
Sep 4 Jerry Lewis' 24th Muscular Dystrophy telethon raises $42,737,219

Jerry Lewis
- Sep 4 46th Venice Film Festival: "A City of Sadness" directed by Hsiao-hsien Hou debuts and wins the Golden Lion
- Sep 4 Monday demonstrations demanding political reforms begin at St Nicholas's church in Leipzig, East Germany, would later be replicated around the country
- Sep 5 Chris Evert's final US Open tennis match; defeated by Zina Garrison 7-6, 6-2 in the quarter finals
- Sep 5 Deborah Norville becomes news anchor of Today Show
Television Premiere
Sep 5 Daytime talk show "The Joan Rivers Show" hosted by Joan Rivers premieres on US TV

Joan Rivers
Baseball Record
Sep 8 George Brett gets his 2,500th hit

George Brett
US Open Women's Tennis
Sep 9 US Open Women's Tennis: Steffi Graf retains her title; beats Martina Navratilova 3-6, 7-5, 6-1

Steffi Graf

Martina Navratilova
Event of Interest
Sep 10 Five days after hitting a HR for Yankees in a 12-2 win over the Mariners, MLB and NFL player Deion Sanders returns a punt 68 yards for a touchdown, his first

Deion Sanders
US Men's Tennis Open
Sep 10 US Open Men's Tennis: Boris Becker of Germany wins his only US title; beats Czech Ivan Lendl 7-6, 1-6, 6-3, 7-6

Boris Becker

Ivan Lendl
- Sep 10 Indianapolis running back Eric Dickerson rushes for 106 yards against San Francisco to become the fastest player to top the 10,000 yard plateau; 91st career game
- Sep 11 Drexel formally pleads guilty to security fraud
- Sep 11 KSO-AM in Des Moines Iowa changes call letters to KGGO
- Sep 13 "Les Miserables" opens at Fisher Theatre, Detroit
Event of Interest
Sep 13 Archbishop Desmond Tutu leads biggest anti-apartheid protest march in South Africa

Desmond Tutu
- Sep 13 Fay Vincent elected baseball's 8th commissioner
- Sep 14 Calgary Flames become 1st NHL team to play in USSR, win 4-2
- Sep 14 Jeff Reardon is 1st to record 30 saves in 5 consecutive seasons
- Sep 14 US performs nuclear test at Nevada Test Site
- Sep 15 The U.S. Congress recognizes Terry Anderson's continued captivity in Beirut.
- Sep 16 Debbye Turner (Mont), 23, crowned 63rd Miss America 1990
- Sep 16 14th Toronto International Film Festival: "Roger & Me" directed by Michael Moore wins the People's Choice Award
- Sep 17 -21] Hurricane Hugo, kills 85 in Charleston, South Carolina
- Sep 17 41st Emmy Awards: LA Law, "Cheers", Dana Delany & Candice Bergen win
- Sep 17 Hurricane Hugo begins 4 day sweep through Caribbean, killing 62
- Sep 17 NYC court of appeals overturns lower court decision & returns America's Cup back to US (from NZ)
- Sep 18 Hurricane Hugo causes extensive damage in Puerto Rico
- Sep 19 Chase Manhattan Discovery Center at Brooklyn Botanic Garden opens
- Sep 19 French DC-10 crashes near Niger, 171 die
- Sep 19 Appeals court restores America's Cup to US after NY Supreme Court gave it to NZ (NZ protested US's use of a catamaran)
Television Debut
Sep 19 "Doogie Howser, M.D.", starring Neil Patrick Harris as a teenage physician, debuts on ABC

Neil Patrick Harris
Album Release
Sep 19 "Janet Jackson's Rhythm Nation 1814" 4th studio album by Janet Jackson is released (Grammy Award Best Long Form Music Video 1990, Billboard Album of the Year 1990)

Janet Jackson
Music Premiere
Sep 20 Musical "Miss Saigon," premieres in London, created by Claude-Michel Schönberg and Alain Boublil

Jonathan Pryce
Television Debut
Sep 22 "Baywatch" starring David Hasselhoff and Pamela Anderson debuts on NBC

David Hasselhoff

Pamela Anderson
- Sep 23 Blue Jays bat out of order against Brewers in 6th inning
- Sep 24 Ryder Cup: US & Europe draw, 14-14 at The Belfry, England
- Sep 24 ABC's premiere of "The Preppie Murder", based on 1986 murder in New York City of Jennifer Levin by ex prep school student Robert Chambers
- Sep 25 Archaeologists open Titus of Rhine grave in Amsterdam
- Sep 25 Ronald Harwood's play "Another Time" premieres in London
- Sep 25 Wade Boggs is 1st to get 200 hits & 100 walks in 4 consecutive seasons
- Sep 26 Last Vietnamese soldiers leave Cambodia
Event of Interest
Sep 26 Soviet Foreign Minister Eduard Shevardnadze calls for total destruction of Soviet & US chemical weapons

Eduard Shevardnadze
Event of Interest
Sep 29 Glenn Frey joins Don Henley on-stage (for 1st time since 1981)

Glenn Frey
Event of Interest
Sep 29 Zsa Zsa Gabor convicted of slapping a police officer in Beverly Hills

Zsa Zsa Gabor
- Sep 30 NASA closes down tracking stations in Hawaii & Ascension
Baseball Record
Sep 30 Nolan Ryan's perfect game broken in 8th, but gets his 300th strikeout

Nolan Ryan