For 1968 in Formula One, he switched to Tyrrell's Matra International team, where he drove a Matra MS10-Cosworth. After a promising start in South Africa with the Matra MS9 development mule he missed Jarama and Monaco due to an F2 injury at Jarama and his first win of the season was in heavy rain at Zandvoort. Another win in rain and fog at the Nürburgring followed, where he won by a margin of four minutes. He also won at Watkins Glen but his car failed at Mexico City, and so he lost the drivers' title to Hill.