Sebastian Vettel wrapped up his second straight Formula One championship Sunday, finishing third behind Jenson Button in the Japanese Grand Prix. Needing just one point to take the title if Button won the race, Vettel earned 15 points to clinch the title with four races left. The 24-year-old German star, the series' youngest two-time champion, has nine victories this season for Red Bull. After doing a victory lap, Vettel ran to the area in front of his pit where he was mobbed by his team. "It's difficult, I don't know where to start," Vettel said. "We've had a long year, a fantastic year. Today's race was difficult. We weren't as fast as we wanted to be on the soft tires, but it was a strong result to win the championships and I want to thank the team." Button raced to his third win of the season for McLaren. "This circuit is very special," Button said. "We love this place and it was great to get a win here. I want to thank the team. The improvements that they did to the care were impeccable." Read more: http://espn.go.com/racing/f1/story/...n-vettel-clinches-another-series-championship