 Complete the following phrase:  His final podium finish came at the 1989 United States Grand Prix in his birthplace of Phoenix, where he was involved in a race-long battle with the Williams-Renault of former Alfa Romeo teammate Riccardo Patrese for 2nd place, but then had to give way at the later stages of the race when his brakes started to fade he claimed that one of his front brakes had actually stopped working. Cheevers last race in Formula One was at the very wet 