“I had many great rivals over the years but the one who stands above the rest has to be Clay Regazzoni. He was my nemesis in both Formula 3 and Formula 2 in the late 1960s and early ’70s.
Clay was a hard racer and we had some mighty battles. You never knew exactly what he was going to do – there were many great tussles. The last race of the 1967 Formula 3 season is a good example of this.
In Formula 3 Clay was with Tecno and I had my Brabham BT21. At Hockenheim in October we went to the Preis der Nationen, which was a one-off championship of national teams, so there was a lot at stake. It was a crazy race, all of us nose to tail on those long straights in the forest. It was an accident waiting to happen.