Career
Matonse qualified for the men"s 100 m freestyle, as a 15-year-old, at the 2004 Summer Olympics in Athens, by receiving a Universality place from FINA, in an entry time of 59.87. He challenged six other swimmers in heat one, including 34-year-old Mumtaz Ahmed of Pakistan. Matonse failed to advance into the semifinals, as he placed sixty-fifth overall out of 71 swimmers in the preliminaries.