Max Verstappen does not think his collision with Lance Stroll during the second free practice session of the GP of Portugal is his fault.

The Dutchman and the Canadian hit each other in the corner when Verstappen tried to overtake Stroll and both ended up outside the track.

"I was completely surprised, he just sent in without looking while I passed him", Verstappen looked back on the incident after the second free practice.

"I have no idea where I should have gone to avoid him."

The 22-year-old Limburger is of the opinion that Stroll should have given him the space to overtake the Racing Point driver.

"I was just doing my fast lap, when he had just completed his. Let's see what will happen next."

Immediately after the collision, Verstappen burst into a series of swearing and was still not completely calmed down after training.

"It's the second free practice and then something like that happens. It's a shame that we touched, and especially unnecessary. It's just stupid."

Due to the crash, both Verstappen and Stroll were unable to continue the second free practice at the Autódromo Internacional do Algarve.

Despite this, the Dutchman of Red Bull Racing set the second fastest time of the session, behind Mercedes driver Valtteri Bottas.

Team boss Horner speaks of a 'fifty-fifty case'

Verstappen and Stroll both had to report to the stewards after the second free practice session in Portimão.

No penalty has yet been issued, but it seems unlikely that both drivers will go unpunished.

Where Verstappen thinks that he cannot be blamed for much, Red Bull team boss Christian Horner is not so sure.

"If I'm completely honest, you could say that both have a role in the incides. Max assumed Lance would slow down, while Lance in turn might not see Max sitting there."

The Briton did not want to anticipate a possible penalty for his driver.

"Both sides will now have to explain their position. It will probably be fifty-fifty."

The third free practice session of the GP of the Algarve starts on Saturday at 12 noon, followed three hours later by qualifying.

The race starts on Sunday at 2.10 p.m.