In 1972 he returned to F1 with the Yardley McLaren team , which was by then being run by Teddy Mayer .
In 1973 he showed his class by winning the British and Canadian Grands Prix , the former in most impressive style under difficult conditions .
In 1972 he returned to F1 with the Yardley McLaren team , which was by then being run by Teddy Mayer , and in 1973 he showed his class by winning the British and Canadian Grands Prix , the former in most impressive style under difficult conditions .