US Men's Tennis Open
Sep 1 Two-time defending US Open champion Pete Sampras has his 17-match winning streak, the 4th-longest of the Open Era in men’s singles, snapped in a 6-7, 7-5, 7-6, 3-6, 7-6 loss to Petr Korda of Czech Republic
- Sep 5 Athens in Greece, selected to host 2004 Olympics
- Sep 5 Orioles beat Yankes 13-9 in longest 9 inning game
US Open Women's Tennis
Sep 6 US Open Women's Tennis: Martina Hingis wins her first US title; outclasses Venus Williams 6-0, 6-4
- Sep 7 US Open Men's Tennis: Patrick Rafter of Australia wins his first Grand Slam title; beats Canadian Greg Rusedski 6-3, 6-2, 4-6, 7-5
Baseball Record
Sep 10 Mark McGwire joins Babe Ruth as only the players to hit 50 HRs in 2 consecutive years
- Sep 12 NY Met John Olerud hits for the cycle
- Sep 13 Carolina Hurricane's 1st exhibition game beat NY Islanders 4-1
- Sep 16 ABL MVP Nikki McCray signs with WNBA
- Sep 16 Mark McGwire signs with the St Louis Cardinals for $26M
Hall of Fame
Sep 18 Seve Ballesteros and Nick Faldo elected to World Golf Hall of Fame
- Sep 20 Yanks clinch 37th appearance in post season, 3rd consecutive
- Sep 21 Mike Piazza is 2nd to hit a HR out of Dodger Stadium
- Sep 21 NY Yankee Cecil Fielder hits his 300th HR
- Sep 22 American sportcaster Marv Albert pleads not guilty to sexual assault charges
- Sep 23 Seattle Mariners break record for most HRs in a year (258)
- Sep 25 American sportcaster Marv Albert plea bargains in his sexual assault case
- Sep 25 WNBA announces it will add Detroit & Washington, D.C. franchises
Baseball Record
Sep 26 Seattle Mariner Ken Griffey Jr. hits his 56th HR of 1997
- Sep 28 Ryder Cup Golf, Valderrama GC, Spain: Europe wins 14½-13½ to retain the Cup; first time event contested in continental Europe; first of 6 consecutive victories at home by Europe
- Sep 28 St Louis Cardinals Mark McGwire hits his 58th HR of 1997 (34 with Oak A's)
Baseball Record
Sep 30 New York Yankees Tim Raines, Derek Jeter & Paul O'Neill are 1st to hit 3 consecutively homers in post season (Yanks beat Cleveland Indians 8-6)