Their personalities clashed off the track and their race cars clashed on it. The teammates became bitter rivals and Frost left to join Ferrari. A year ago, in the US Grand Prix in Phoenix, a new French star first on the scene. John Lacey battled Senna toe-to-toe and though he lost the race, Lacey became the symbol of the new competitiveness in Formula One. He also became Frost's Ferrari teammate. This year in Phoenix, Senna ousted Lacey from the whole position that has become synonymous with the Senna name. He then stood by and watched as Lacey tried to recapture the pole in the closing seconds of qualifying. A fanzai run that ended in disaster. For Senna, a record 53rd career pole. For Lacey, another hard lesson in the reality of the world's premiere road racing series. But the pole is just the beginning. Now they will battle for victory. Thanks for watching.