Though initially not one of cricket's more successful figures, his career began a turnaround during his second year, 1997, in which he switched roles from bowler to a specialist tail-ender for the ICC Trophy. After five years Onyango was recalled in a surprising fashion - as a number 11 against Australia in 2002, but didn't bowl throughout. Though missing Kenya's World Cup campaign of 2003, he was recalled for 2004's Champions Trophy. Since 2004 Onyango has developed into an effective bowling all-rounder and followed up his maiden first-class half century with match winning figures of 6-21 in Kenya's 2005 Intercontinental Trophy victory over Uganada. Lately he has been working on his batting and has made some handy contributions to the Kenyan batting line up.