Ka cika wannan jumla: Ya yi iyo a madatsar ruwa na Birtaniya a gasar Olympics da kuma gasar zakarun Turai. Clarke ya lashe lambar azurfa a tseren tseren mita 4 × 100 a gasar Olympics ta duniya.
1962 Gasar Kofin Turai na Wasannin Ruwa. Ya gama na bakwai a cikin wannan taron a wasannin Olympics na 1960.