Nyora kupfuurira kweiyi ndima - Muna 1977, Leonard akanga ari pamwero mukuru wesimba rake. Akava mutambi wechipiri kumhanya mamita zana mumasekondi asingasviki gumi nemaitiro emagetsi, achimhanya mumasekondi 9.98 musi waAugust 11 kuGuadalajara (wekutanga aive 1968 Olympic shasha Jim Hines), nhasi uno Leonard anomira semutambi chete wechiSpanish anotaura 10-wechipiri chipingamupinyi. Leonard aivawo nokumhanya kwakanaka kwaakaratidza paakava munhu aimhanya kupfuura vamwe vose munyika mugore iroro mumakwikwi emamita 200 aine nguva yemasekonzi 20.08. Pamutambo wokutanga weWorld Cup wegore iroro, Leonard akahwina menduru yebronze mumakwikwi e100 ne200 metres achimiririra nyika yeAmerica. Musi wa13 Gunyana akaisa nguva yepasi rose yepamusoro yepamusoro ye100 m pa10.03 s. Akakundawo ndarama pamakwikwi eWorld Student Games muna 1977 pamakwikwi emamita 100
.