MONZA, Italy — Sebastian Vettel became the youngest driver to win a Formula One race Sunday when the 21-year-old German captured the Italian Grand Prix on a wet Monza course that made for difficult driving.

Vettel was on the pole and edged Heikki Kovalainen of McLaren by 12.5 seconds to give Torro Rosso its first victory.

"For sure the best day of my life," Vettel said. "These pictures, these emotions I will never forget."

Fernando Alonso, a two-time world champion, had been the youngest winner at 22 when he won he took the 2003 Hungarian GP.

Lewis Hamilton worked his way up from 15th on the grid to finish seventh, maintaining his lead in the overall standings. Felipe Massa of Ferrari was sixth and trails the McLaren driver by one point with four races left.

Vettel, also the youngest driver to start from pole, pumped his fists on the podium before the champagne sprayed in all directions.

"Who would have thought about that at the beginning of the season?" he said, referring to Toro Rosso's chances. "We can be proud of ourselves, celebrating a victory. What a weekend."

BMW-Sauber's Robert Kubica was third, followed by Alonso of Renault and Nick Heidfeld of BMW-Sauber.

This was the wettest race at Monza in 27 years. The safety car was brought out for the start with the steady drizzle failing to let up and all cars using extreme wet tires to navigate the track.

Vettel benefited at the start thanks to a clear track and none of the spray and poor visibility facing the rest of the field.

"Being first, having no visibility problems at all I think was the key," said Vettel, who will replace David Coulthard at sister team Red Bull next season. "I could make a gap to Heikki straight away."

Kovalainen said a brake problem and his tires compromised his chance at challenging Vettel early on.

"It was not possible to win today," the Finnish driver said. "I was just trying to push and go faster. I think it was the maximum we could do today."

Vettel's teammate Sebastien Bourdais was a lap behind to start after his car stalled from fourth on the grid.

Hamilton eventually got past defending F1 champion Kimi Raikkonen of Ferrari and had continued to overtake his rivals, moving up to eighth by the 17th lap.

Massa, who had started sixth, won a duel with Nico Rosberg to move up into fourth before dropping back again.

Hamilton pitted later than many rivals and was trailing only Vettel by the time he stopped to refuel. Raikkonen, who trails Hamilton by 21 points, was stuck behind the traffic in 10th by his first stop as the drizzle began to let up.

If not for an extra pit stop to get off the extreme wet tires, Hamilton felt he could have finished much higher.

"I showed I'm quickest in the wet and showed that I have great pace," the 23-year-old Briton said. "I think the win was possible today considering the position we were in. If we had chosen to be on the intermediate tire on the first stop ... we would have been further up,"

The persistent rain made it difficult to judge conditions and favored those drivers who had taken on more fuel in qualifying.

"It got more tricky in the middle of the race when there was no standing water anymore," Vettel said. "People went left and right looking for water to cool down the tires. It was very slippery."

Kubica, who had started 11th, shaved four points off of Hamilton's lead to sit 14 back in third.

"The start of the race was very difficult," he said. "I overtook Nick without seeing him."

Hamilton pushed Mark Webber out down the straightaway in the closing stages with the cars touching wheels to force the Red Bull driver off the track. Webber finished eighth for the final point.

Only Force India's Giancarlo Fisichella retired despite the slippery conditions.

INDIANAPOLIS GRAND PRIX: At Indianapolis, te only thing that stopped Valentino Rossi was the weather.

Taking the lead from American rider Nicky Hayden on the 14th lap, Rossi easily began pulling away before a sudden rainstorm and swirling wind stopped the inaugural Indianapolis GP motorcycle race eight laps from the finish. Locked into first place, the Italian rider pulled into the pits and waited about a half-hour until Sunday's race was officially halted.

"The wind is very inconstant and very strong. You never know what's going to happen with the bike," Rossi said. "Every lap, I look and I say, 'I hope for the red flag, I hope for the red flag.' It was a good decision."

During the storm, two fans were injured and taken to Methodist Hospital after an infield tent collapsed. Their injuries were described as not life-threatening. The storm also briefly knocked out the Speedway's public address system and power in the Pagoda scoring tower and media center.

This was the first time motorcycles competed at the Speedway since 1909, the year the track was built and two years before the first Indianapolis 500.

The victory on the Indianapolis Motor Speedway's 2.6-mile road course was Rossi's seventh this season and fourth in a row, moving him closer to his sixth MotoGP series championship with four races to go. It also was his 69th career win, breaking the record he shared with former rider Giacomo Agostini.

"I don't remember if or when I won four races in a row," Rossi said. "We are in good shape."

Jorge Lorenzo of Spain was third and Casey Stoner of Australia, who trails Rossi in season points 287-200, was fourth.

Rossi started from the pole but yielded the lead almost at once to Stoner and then to Andrea Dovizioso of Italy.

Hayden, the "Kentucky Kid" who calls the Speedway his home track, passed Dovizioso for the lead on the second lap and stayed in front until Rossi finally caught him on the 14th lap. By the end of the 18th lap, Rossi's lead was about 1 second, with everyone else was at least 8 seconds behind. The next lap, Rossi built his lead to 3 seconds. When the race was red-flagged after the 20th lap, his lead over Hayden had ballooned to 5.972 seconds.

Rossi averaged 84.201 mph for the race's 20 laps.

The second-place finish for Hayden, the 2006 series champion from Owensboro, Ky., was his best this season.

"Man, I had nothing to lose here," Hayden said. "I just had to go for it. The bike felt good in the wet. It's been so long since I've been out front leading a race. I came on the front straightaway and saw nobody in front of me at my home GP, and I was thinking, 'Man, this is only supposed to happen in the movies."'

In earlier support races, 15-year-old Jacob Gagne of Ramona, Calif., won the Red Bull AMA U.S. Rookies Cup; Sturla Fagerhaug of Norway won the Red Bull Riders Cup; and Nicolas Terol of Spain won the 125 cc class, which was halted by rain after 16 of the scheduled 23 laps. The 250 cc class was canceled.