as front-row starter Montoya retired with brake problems and early leader Jarno Trulli took third behind Rubens Barrichello. At the Monaco Grand Prix, Trulli scored his first career victory from pole after surviving intense pressure from Jenson Button. Rubens Barrichello in third was the only other driver on the lead lap, albeit more than a minute behind the leaders. Teammate Schumacher was one of several front-runners who retired, the championship leader's five-win streak ending after a collision with Juan Pablo Montoya under the safety car. That safety car period was necessitated by Fernando Alonso, who slammed the barrier on lap 42 while attempting to lap the Williams of Ralf Schumacher in the tunnel. Earlier in the race, a fast-starting Takuma Sato suffered a spectacular engine failure on the third lap at the Tabac corner; the smoke from the rear of his BAR machine blinded the queue behind him, causing Giancarlo Fisichella to mount the back of David Coulthard's McLaren and flip over. Olivier Panis stalled as the race was due to begin, shortening the race to 77 laps as the remaining drivers completed a second formation lap. Panis later recovered to eighth place as he and sixth-placed Cristiano da Matta scored Toyota's first points of the season. Michael Schumacher returned to his winning ways by leading the majority of the European Grand Prix at the Nürburgring, with Barrichello and Button following him home in second and third. Ralf Schumacher, meanwhile, collided with da Matta at the start, causing both cars to retire from the race. Front-row starter and one-time leader Sato joined the list of retirements with a late engine failure, as did the McLaren duo of Räikkönen and Coulthard, both of whose Mercedes engines expired at the manufacturer's home race. North American doubleheader and return to Europe At the Canadian Grand Prix, Timo Glock replaced Giorgio Pantano at Jordan for financial reasons. Ralf Schumacher qualified on pole position, joined by Jenson Button on the front row, with Michael Schumacher only starting from sixth. After a series of lead changes, the elder Schumacher ultimately crossed the line first, followed by his brother and Rubens Barrichello. But the Williams of Ralf Schumacher—along with his fifth-placed teammate Juan Pablo Montoya and the Toyotas of Cristiano da Matta and Olivier Panis in eighth and tenth—would later be excluded from the results due to an irregularity in the brake ducts, promoting Barrichello to second