 Complete the following phrase:  Surtees retained Brambilla for 1978, and Binder was replaced by Englishman Rupert Keegan. The first race of 1978 was the 1978 Argentine Grand Prix, in which Brambilla finished 18th and Keegan retired with overheating. At the Brazilian Grand Prix, the Italian failed to qualify and the Englishman retired due to a crash. The South African Grand Prix saw Brambilla finish 12th; Keegan retired when his engine failed. The Italian retired with transmission failure at the United States Grand Prix West; Keegan qualified but did not start due to a practice accident. For the Monaco Grand Prix, Brambilla drove the new Surtees TS20, but Keegan was still using the TS19 as there was only one TS20 available. Keegan retired with transmission failure. At the 