- Sep 1 Mushfiqur Rahim, Bangladeshi cricket batsman (75 Tests, 7 x 100s, TS 219*; Rajshahi Division), born in Bogra, Bangladesh
- Sep 2 Ishant Sharma, Indian cricket fast bowler (102 Tests, 306 wickets; 80 ODIs, 115 wickets; Sussex, Delhi Capitals), born in Delhi, India
- Sep 3 Carla Suárez Navarro, Spanish tennis player (2 WTA, 6 ITF titles), born in Las Palmas, Spain
- Sep 7 Kevin Love, American basketball player, born in Santa Monica, California
- Sep 8 Arrelious Benn, American football wide receiver, born in Washington, D. C.
- Sep 10 Jordan Staal, Canadian ice hockey center (World C'ship gold 2007; Stanley Cup 2009 Pittsburgh Penguins; Carolina Hurricanes captain), born in Thunder Bay, Ontario
- Sep 13 Keith Treacy, Irish footballer (Preston North End), born in Dublin, Ireland
- Sep 14 Martin Fourcade, French biathlete (5 Olympic gold 2014, 18), born in Perpignan, France
Juan Martín del Potro (35 years old)
Sep 23 Argentine tennis player (US Open 2009), born in Tandil, Argentina
Kevin Durant (35 years old)
Sep 29 American basketball forward (NBA C'ship, NBA Finals MVP 2017, 18 Golden State Warriors; 11 × NBA All-Star; NBA All-Star Game MVP 2012, 19; Olympic gold 2012, 16, 20), born in Washington, D.C.
About September 1988
How Old? 35 years old
Generation: Millennial
Leap Year: Yes
Baseball Players
Basketball Stars
Boxers
Footballers
NFL Stars
Tennis Champions