 Complete the following phrase:  Ogunkoya won the 100 metres race at the 1996 African Championships and became Nigerian champion in 1996 and 1997. In 1998 he won the Weltklasse Zürich meet with 9.96 seconds, a new personal best, before winning the 1998 African Championships in another personal best, and championship record, of 9.94 seconds. In September he finished fourth at the IAAF Grand Prix Final before winning the silver medal at the 