
Tempers boiled at the Azerbaijan Grand Prix in Baku after a collision between title leader Sebastian Vettel (right) and rival Lewis Hamilton.

On lap 20 of the race, when the drivers were behind the safety car, Vettel bumped into the back of Hamilton, damaging his front wing in the process. The gesticulating German then pulled up alongside his Mercedes rival and appeared to turn deliberately into Hamilton's car.

After being handed a 10-second penalty, Vettel finished fourth, one place in front of Hamilton who lost time after his headrest became loose.

The Brit said Vettel had "disgraced himself" during the earlier incident.

The chaotic race, which saw three safety car periods and one red flag deployed, was won by Australian Daniel Riccardo. It was the fifth win of the Red Bull driver's career.

Hamilton and Vettel look set to go toe-for-toe in this year's championship battle. Hamilton, runner-up in 2016, currently trails his rival by 14 points with 12 races remaining this season.