Ayrton Senna da Silva, (pronounced [a?i?tõ ?sen? da ?siwv?] (help·info), March 21, 1960 – May 1, 1994) was a Brazilian race car driver and three-time Formula One world champion. He was killed while leading the 1994 San Marino Grand Prix and is the most recent Grand Prix driver to die at the wheel of a Formula One car. Senna began his motorsport career in karting and moved up the ranks to win the British Formula 3 championship in 1983. Making his Formula One debut with Toleman in 1984, he moved to Lotus-Renault the following year, and won six Grands Prix over the next three seasons. In 1988 he joined Frenchman Alain Prost at McLaren-Honda. Between them, Senna and Prost won fifteen out of the sixteen Grands Prix which took place that season, with Senna winning his first World Championship, a title he would go on to win again in 1990 and 1991. McLaren's performance declined in 1992, as the Williams-Renault combination began to dominate the sport, although Senna finished runner-up in 1993. He moved to Williams in 1994, but suffered a fatal accident at the third race of the season at the Autodromo Enzo e Dino Ferrari in Italy. Senna is regarded as one of the greatest drivers in the history of Formula One.[2][3][4] He was recognised for his qualifying speed over one lap and held the record for most pole positions from 1989 to 2006. He holds the record for most victories at the prestigious Monaco Grand Prix (6) and is the third most successful driver of all time in terms of race wins. Senna courted controversy throughout his career, particularly during his turbulent rivalry with Alain Prost, which was marked by two championship-deciding collisions at the 1989 and 1990 Japanese Grands Prix.