10 Athletes Born on March 23

I don't think there is anything in this but it makes an interesting list

1. Roger Banniste, distance runner 1929
2. Robbie James, footballer 1957
3. Steve Redgrave, rower 1962
4. Mike Atherton, cricketer 1968
5. Joe Calzaghe, boxer 1972
6. Jerzy Dudek, footballer 1973
7. Chris Hoy, track cyclist 1976
8. Shelley Rudman, skeleton bobsleigh athlete, 1981
9. Mo Farah, long distance runner 1983
10. Jason Kenny, track cyclist 1988

10 Sports Manufacturers and Dates of Origin

1. Mitre United Kingdom 1817
2. Le Coq Sportif France 1882
3. Patrick Belgium 1892
4. Reebok United States 1895
5. New Balance United States 1906
6. Wilson United States 1913
7. Admiral United Kingdom 1914
8. Umbro United Kingdom 1924
9. Adidas and Puma Germany 1948 and 1949
10. ASICS Japan 1949

(Also, Fila Italy 1911, Hummel Denmark 1923, Diadora Italy 1948)

10 Sporting Siblings

1. Venus and Serena Williams (Tennis)
2. Jamie and Andy Murray (Tennis)
3. Jonny and Alister Brownlee (Triathlon)
4. Rory and Tony Underwood (Rugby)
5. Steve and Mark Waugh (Cricket)
6. Michael and Ralf Shumacher (Motor racing)
7. Wladimir and Vitali Klitschko (Boxing)
8. Ian, Greg and Trevor Chapell (Cricket)
9. Francesco and Edoardo Molinari (Golf)
10. Mako and Billy Vunipola (Rugby)
Bonus Dom, Vince and Joe DiMaggio (Baseball)

10 Welsh Sporting Greats

Because of Geraint Thomas lots of people are doing this sort of thing.