Ramba uchiverenga ndima ino - Akaita mutambo wake wokutanga paWorld Cup muna December 1978 ava nemakore 16 paakapedza ari pachikumbaridzo mumakwikwi e slalom muItaly. Kukunda kwake kwekutanga muWorld Cup kwakauya aine makore gumi nemasere muna Ndira 1981, wekutanga kukunda mu giant slalom mumwaka iwoyo wekubudirira. McKinney akamhanya pamakwikwi eWorld Cup kwemwaka gumi nerimwe, uye akakwikwidza mumitambo mitatu yeOlympic nemumakwikwi mashanu epasi rose. Akakunda menduru ina mumakwikwi enyika; menduru dzendarira mukubatana (1985, 1987
) uye slalom (1989), uye menduru yegoridhe mubatanidzwa paVail muna 1989.