Lewis Hamilton grabbed his first victory of the season in stunning fashion as Sebastian Vettel and Mark Webber broke the cardinal rule of Formula One at the Turkish grand prix.
After 39 laps Webber was poised to spearhead another one-two with Vettel in Istanbul to record his third consecutive triumph, with Hamilton and McLaren team-mate Jenson Button in third and fourth.
But on lap 40, Vettel made a move on his Australian team-mate that resulted in the young German crashing out of the race, to the despair of Red Bull's team boss, Christian Horner, and Adrian Newey, the technical director.
This allowed Hamilton and Button to slip by into first and second and, despite enduring their own hair-raising moment, Hamilton, the 2008 world champion, took the chequered flag to end a run of nine races without a win.
Vettel attempted his ill-advised move down the straight into turn 12, pulling alongside Webber and edging his way across towards the centre of the track, perhaps hoping the Australian would yield. Instead, the right rear of Vettel's Red Bull collided with the front left of Webber's car with the German coming off worse as he was sent into a spin and forced to retire on the spot.
Webber lost the left end-plate of his front wing, forcing him into making a second pit stop for a replacement.
Then, at the end of lap 49 and the start of lap 50, Button attempted an overtaking manoeuvre on Hamilton beginning at the same point where Vettel and Webber had collided.
As Button passed Hamilton on entry into turn 12 the duo touched wheels, with the world champion taking the lead in turns 13 and 14. But, slip-streaming Button along the pit straight, Hamilton managed to regain the lead on entry into turn one, forcing the 30-year-old to run wide.
Following that brief skirmish, both drivers were told to conserve fuel, which led to Button falling behind Hamilton and finishing 2.6sec behind at the flag as the younger man ended a run of nine races without a win.
Webber comfortably held third ahead of Michael Schumacher, followed by Nico Rosberg, Robert Kubica, Felipe Massa, Fernando Alonso, Vitaly Petrov, Adrian Sutil. Kamui Kobayashi took 10th for Sauber's first point of the season.
Despite the drama Webber has increased his advantage in the title race to five points over Button, with Hamilton a further four points behind. Alonso and Vettel drop to fourth and fifth.
As the race was finishing, the young German driver was seen personally apologising to members of the Red Bull team for destroying their chances of another impressive victory.