Events in Sport
- Sep 3 After beating South Africa the previous weekend, New Zealand clinch their 6th Tri Nations Rugby Series with a 34-24 win over Australia in Auckland; All Blacks winger Doug Howlett crosses for 3 tries
- Sep 4 20 year old Kyle Busch becomes youngest driver to win a NASCAR Cup Series race when he out duels Greg Biffle in the Sony HD 500 at California Speedway
Tennis Open
Sep 10 125th US Open Women's Tennis: Belgian Kim Clijsters wins her first of 4 Grand Slam titles; beats Mary Pierce 6-3, 6-1
Mary Pierce
- Sep 11 US Open Men's Tennis: Roger Federer retains title; beats Andre Agassi 6-3, 2-6, 7-6, 6-1; Agassi's last appearance in a Grand Slam final
Event of Interest
Sep 11 Solheim Cup Women's Golf, Crooked Stick GC: US regains Cup 15½–12½; Meg Mallon clinches with 3 & 1 victory over Karen Stupples
Meg Mallon
Event of Interest
Sep 12 Mark Messier announces on ESPN radio that he will retire from the NHL
Mark Messier
- Sep 18 Federation Cup Women's Tennis, Paris, France: Russian pair Elena Dementieva & Dinara Safina win deciding doubles rubber 6-4, 1-6, 6-3 over Amélie Mauresmo & Mary Pierce of France; clinches Russia's 2nd consecutive title, 3-2
- Sep 25 Spanish Renault driver Fernando Alonso takes 3rd place in the Brazilian Grand Prix at Autódromo José Carlos Pace to clinch his first Formula 1 World Drivers Championship
- Sep 27 Atlanta Braves clinch their 14th straight division title thanks to Philadelphia's loss to the New York Mets
- Sep 29 Chicago White Sox clinch their first division title since 2000 and become just the 10th team in the history of baseball to be in first place on every day of the season
Deaths in Sport
- Sep 8 Noel Cantwell, Irish cricketer and footballer (b. 1932)
- Sep 11 Chris Schenkel, American sportscaster (Monday Night Fights), dies at 82
- Sep 13 Toni Fritsch, Austrian football and American football player (b. 1945)
- Sep 18 Michael Park, British Rally co-driver (b. 1966)
- Sep 25 George Archer, American golfer (b. 1939)