 Nyorai mberi kweiyi ndima - Besanko akanga ari mukwikwidzi wenyika yejunior yezvipingamupinyi uye akakwikwidza mumitambo yakawanda yeathletics asati abatana neEssendon. MuAustralia Track Field Championships, kuita kwake kwakanakisa kwaisanganisira nzvimbo yechipiri mumamita zana muna 1976-77 uye mana akateedzana matatu epamusoro mu200m, achipedza wechipiri muna 1978-79. Akanga ariwo nhengo yechikwata cheVictorian chakakunda 4 x 100 metres relay yekupedzisira mu1977-78, pamwe naFred Lehmann, Peter Van Miltenburg naColin McQueen. Munyika yose, Besanko akamirira Oceania pa 1977 IAAF World CupmuWest Germany ne1979 IAAF World Cup muCanada. Mumakwikwi ose eWorld Cup akanga ari mumhedziso mumakwikwi e4 x 100 metres, achiisa wechinomwe nguva dzose. Kuita kwake kwakanakisisa pamunhu mumwe chete paWorld Cup kwakauya muna 1979, paakazopinda mumakwikwi ekupedzisira emamita 200 uye akapedza ari wechisere. 