Lando Norris-Oscar Piastri Singapore GP collision has changed ground rules in F1 title battle, says Martin Brundle

Martin Brundle believes "the ground rules have changed" between Lando Norris and Oscar Piastri after the title-contending McLaren team-mates made contact on the opening lap of the Singapore Grand Prix.

With Norris starting fifth and Piastri third at the Marina Bay Street Circuit, the former took advantage of a strong getaway to surge past the Mercedes of Kimi Antonelli and launch an attempted overtake on his team-mate.

Norris got up the inside of Piastri at Turn 3, but then made contact with the Red Bull of Max Verstappen ahead, with his reaction to that initial collision sending him right and into his team-mate, with the heavy wheel-to-wheel hit almost sending the Australian into the barrier.

Piastri appeared initially to suggest over the radio that McLaren should reverse his and Norri