Valtteri Bottas has voiced his frustration after team-mate Pastor Maldonado forced him off the track on the final lap of the Japanese GP.
Fighting with Sergio Perez for position, Bottas was overtaken by the McLaren driver on the final lap while his team-mate Maldonado tried to take advantage of the situation.
Diving up the inside of Bottas, Maldonado forced his team-mate to run off the track in order to avoid a collision.
And Bottas isn't happy about it.
"I was trying to block him on the inside, but he braked so late that I didn't have anywhere to go other than straight over the chicane, so it was quite risky," the Finn told Autosport.
"If I had kept to my line, we would have crashed for sure.
"Maybe it was not the fairest move, there was a big risk of colliding.
"I braked late, but he braked so late that there was no space for two cars and I was on the outside and he was right on the white line so I had to go straight."
Maldonado, though, called it a "clean manoeuvre" while Williams chief race engineer Xevi Pujolar put it down to a racing incident.
"We didn't have any team orders," he said.
"All race, we had Valtteri in front and Pastor behind and we let them race and on the last lap they came close at the last corner, but that's how it is sometimes.
"You don't want to damage the car, but I guess it's part of racing."