SPA, Belgium - Defending Formula One champion Sebastian Vettel won the Belgian Grand Prix on Sunday to strengthen his overall lead with seven races remaining.

Vettel started from pole position to win his seventh race of the season and 17th of his career. The German led Red Bull to a 1-2 finish with Mark Webber finishing close behind.

McLaren's Jenson Button started way down in 13th spot, but he caught Fernando Alonso near the end to take third place.