Ramba uchiverenga ndima iyi - Somunhu oga, Coulthard akahwina menduru yesirivha paGolden Spin yeZagreb muna 1977 uye zita renyika yeAustralia mumwaka wa1979-1980. Akapedza ari 28th pa 1979 World Championships
muVienna, kuAustria, uye wechi24 paWorld Championships muna 1980 muDortmund, kuWest Germany. Australia yakasarudza kusamutumira kumaOlympics a1980, zvichitungamira kuchisarudzo chake chekuchinjira pakudzidzisa.