|Born||September 4, 1978|
His personal best time is 44.43 seconds, achieved in July 2003 in Nairobi. This ranks him third in Kenya, behind Samson Kitur and Charles Gitonga, and fifth in Africa, behind Innocent Egbunike, Kitur, Gitonga and Davis Kamoga. He won gold at the 2003 Afro-Asian Games.
Sambu was the captain of the Kenyan team at the 2007 All-Africa Games. He planned to retire after the 2008 Summer Olympics in Beijing, China  He did not, however, participate at the Olympics. As of 2009, he is reported to be still active, although sidelined due to injury.
- https://web.archive.org/web/20170219040110/http://www.gbrathletics.com/cm99.htm Commonwealth All-Time lists (men)
- 2003 Afro-Asian Games: Athletics results October 29 (through archive.org)
- The Standard, July 3, 2007: Sambu set to quit (through archive.org)
- The Standard, July 23, 2009: Mumo shifting gears to 800m
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