1990 Formula One World Championship
It stayed like that on lap 21 when Senna passed Alesi for fifth but he was forced to pit on the next lap with a slow puncture. Nannini soon passed Alesi to take fifth. The leaders stopped and Berger was the big loser with Nannini and Senna the big gainers, rising directly behind the Williams men. The order was: Boutsen, Patrese, Nannini, Senna, Mansell and Berger. Boutsen then pulled away while Patrese held up the others until Nannini streamed by with Senna following him.