Pedzisa mutsara unotevera: In Ganley akamhanya nokuda kwechikwata cheMarlboro BRM ndokupedza ari 13 muChampionship nemapoinzi 4. Mugumo wake wepamusoro wemwaka uyu waiva wechina pa
Nürburgring. Kwemwaka Ganley akasaina kuti atyaire motokari yeIso<unk>Marlboro yeFrank Williams Racing. Pa1973 Canadian Grand Prix akapotsa aziviswa kuti ndiye akakunda pamusana pekukanganisa nguva nemotokari yekumhanyisa; apo migumisiro yakagadziriswa, Ganley akaiswa sechitanhatu.