- Sep 1 Barbara Paulus, Austrian tennis player (world #10 1996; 6 x WTA titles), born in Vienna, Austria
- Sep 3 Gareth Southgate, English soccer midfielder (57 caps; Crystal Palace, Aston Villa, Middlesbrough) and manager (Middlesborough, England), born in Watford, England
- Sep 3 Uzooma Okeke, American CFL HOF guard (7 x CFL All Star; Shreveport Pirates, Ottawa Rough Riders, Montreal Alouettes), born in Beaumont, Texas
- Sep 5 Brad Hopkins, American NFL tackle (Houston Oilers), born in Columbia, South Carolina
- Sep 5 Lori Harrigan, American softball pitcher (Olympic gold 1996), born in Anaheim, California
- Sep 5 Michael Potts, American pitcher (Milwaukee Brewers), born in Langdale, Alabama
- Sep 5 Mohammad Rafique, Bangladeshi cricketer, born in Dhaka, Bangladesh
- Sep 5 Willie Clay, American NFL safety (Detroit Lions), born in Pittsburgh, Pennsylvania
- Sep 6 Igor Korolev, Russian ice hockey player (Team Russia, Winnipeg), born in Moscow, Russia
- Sep 6 Shane Heal, Australian basketball guard (Olympics x 4, captain 2004; Minnesota Timberwolves, San Antonio Spurs) and broadcaster (Fox Sports, ESPN), born in Melbourne, Australia
- Sep 6 Torrance Small, American NFL wide receiver (New Orleans Saints), born in Tampa, Florida
- Sep 8 Clarence Weatherspoon, American NBA forward (Philadelphia 76ers), born in Crawford, Mississippi
- Sep 9 Dan Miceli, American baseball pitcher (Pittsburgh Pirates), born in Newark, New Jersey
- Sep 9 Joey Hamilton, American baseball pitcher (San Diego Padres), born in Statesboro, Georgia
- Sep 9 Mike Faulkerson, American football fullback (Chicago Bears), born in Kingsport, Tennessee
- Sep 10 Julie Halard-Decugis, French tennis player (US Open doubles 2000 [Ai Sugiyama]; 12 x WTA singles titles), born in Versailles, France
- Sep 11 William Joppy, American professional boxer, born in Silver Spring, Maryland
- Sep 12 Rebecca Joyce, Australian rower (World C'ship gold LW1x; Olympic bronze LW double sculls 1996), born in Melbourne, Australia
- Sep 13 Martín Herrera, Argentine footballer, born in Río Cuarto, Argentina
- Sep 14 Francesco Casagrande, Italian road racing cyclist, born in Florence, Italy
- Sep 16 Anthony Marshall, American NFL safety (Chicago Bears), born in Mobile, Alabama
- Sep 16 Paul Shuey, American baseball pitcher (Cleveland Indians), born in Lima, Ohio
- Sep 17 Mark Brunell, American NFL quarterback (Jacksonville Jaguars) and coach, born in Los Angeles, California
- Sep 18 Everett Lindsay, American NFL guard and center (Minnesota Vikings), born in Burlington, Iowa
- Sep 18 Mike Compton, American NFL center and guard (Detroit Lions), born in Richlands, Virginia
- Sep 19 Antti Törmänen, Finnish professional ice hockey forward, 1990-2004 (Finland Olympic bronze, 1998; Ottawa Senators), and European leagues coach, born in Espoo, Finland
- Sep 20 John Copeland, American NFL defensive end (Cin Bengals), born in Lanett, Alabama
- Sep 21 Michael O'Shea, Canadian CFL linebacker (Toronto Argonauts), born in North Bay, Ontario
- Sep 22 Emmanuel Petit, French footballer (Chelsea, France), born in Dieppe, France
- Sep 22 Mike Matheny, American MLB player (Milwaukee Brewers) and manager (Kansas City Royals), born in Columbus, Ohio
- Sep 23 Georgios Koltsidas, Greek footballer
- Sep 24 Kristin Talbot, American speed skater (Olympics 1994), born in Schuylerville New York
- Sep 24 Paul Spoljaric, Canadian pitcher (Toronto Blue Jays), born in Kelowna, British Columbia
- Sep 24 Winfred Tubbs, American NFL linebacker (Pro Bowl 1998; New Orleans Saints, SF 49ers), born in Fairfield, Texas
- Sep 25 Damon Pieri, American NFL safety (Carolina Panthers), born in Phoenix, Arizona
- Sep 25 Doug Pelfrey, American NFL kicker (Cin Bengals), born in Fort Thomas, Kentucky
- Sep 26 Paul Laus, Canadian NHL defenseman (Florida Panthers), born in Beamsville, Canada
- Sep 26 Trevor Ruffin, American NBA guard (Philadelphia 76ers), born in Buffalo, New York
- Sep 28 Kimiko Date, Japanese professional tennis player (Japan Open, 1996), born in Kyoto, Japan
- Sep 29 Chris Mims, American NFL defensive end, 1992-99 (San Diego Chargers; Washington Redskins), born in Los Angeles, California (d. 2008)
- Sep 29 Joe Hudson, American MLB relief pitcher, 1995-98 (Boston Red Sox; Milwaukee Brewers), born in Philadelphia, Pennsylvania
- Sep 29 Luke Bodensteiner, American cross country skier (Olympics 1994), born in Iowa City, Iowa
- Sep 29 Nicolas Pereira, Venezuelan tennis player, born in Salto Uruguay
- Sep 30 Eric Piatkowski, American NBA player (LA Clippers), born in Steubenville, Ohio
About September 1970
How Old? 53 years old
Generation: Generation X
Leap Year: No
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions