Ayrton Senna da Silva was a Brazilian racing driver who won the Formula One World Drivers' Championship in 1988, 1990 and 1991, and who is widely regarded as the greatest Formula One driver of all time. He died in an accident while leading the 1994 San Marino Grand Prix whilst driving for Williams Racing. In 1988, he joined Frenchman Alain Prost at McLaren-Honda. Between them, they won all but one of the 16 Grands Prix that year, and Senna claimed his first World Championship. He courted controversy throughout his career, particularly during his turbulent rivalry with Prost. Senna has often been voted as the best and most influential Formula One driver of all time in various motorsport polls.