Ayrton Senna of Brazil shattered the qualifying lap record on the first day of trials today and won the provisional pole position for Sunday's Monaco Grand Prix.
Senna, in a McLaren-Honda, sped through the Monte Carlo street course in 1 minute, 21.797 seconds. That bettered by more than a half-second his own qualifying mark set last year of 1:22.308. He averaged 91.01 m.p.h. today.
The second best time was turned in by Senna's teammate, Gerhard Berger of Austria--1:23.001. Third was surprising Jean Alesi of France in a Tyrrell-Ford--1:23.372.
After an off day Friday, the drivers come back on Saturday for the second qualifying session to determine the final starting grid for Sunday's Formula One race.
Senna leads the world drivers' championship standings after three races with 13 points. Prost and Berger have 12 points.