Who won the first four Formula One Grand Prix races in 1991?

Ayrton Senna da Silva (21 March 1960 – 1 May 1994) was a Brazilian racing driver who won three Formula One world championships for McLaren in 1988, 1990 and 1991, and is widely regarded as one of the greatest Formula One drivers of all time. He died in an accident while leading the 1994 San Marino Grand Prix for Williams.

In 1991, Senna became the youngest ever three-time world champion, taking seven wins and increasing his pole position record to 60 from 127 events. Senna won the first four races as his rivals struggled to match his pace and reliability.