Lewis Hamilton led a dramatic one-two for McLaren with Jenson Button at the Turkish Grand Prix after Red Bull drivers Mark Webber and Sebastian Vettel collided while leading.
..Hamilton and Button remained in a close-knit front group until lap 41 of 58, when Vettel - level on 78 points with his team-mate heading into the weekend - pulled alongside Webber heading into turn 12.
The German seemed to move sideways into the Australian's sister RB6 and spun into the gravel and out of the race.
The incident saw Webber drop back behind the chasing McLarens, who could have suffered a similar fate when Button put a move on Hamilton at the same turn.
Hamilton retook the lead by the end of the lap - and Button dropped off in the closing laps