Felipe Massa hit out at Lewis Hamilton after the pair nearly collided ahead of their final qualifying runs at the Singapore Grand Prix.
Hamilton was trying to get ahead of Massa to get a clear lap in Q3, and he tried to dive inside the Ferrari at Turn 19 - but the pair nearly came together.
Massa finally let Hamilton through as he backed off to get himself in clear air behind Fernando Alonso who was ahead of him on the track - but he was distinctly unimpressed with his rival's driving.
When asked by AUTOSPORT to talk through what happened with Hamilton, Massa said: "Maybe you need to ask him. To be honest I don't understand what he wanted to do.
"Three cars were going slow to prepare the lap and he was trying to...I don't know. Ask him. To be in a condition to touch someone on the out lap? And do another mistake? I think he didn't use his mind again."
Massa reckons the incident had ruined his own preparation for the qualifying lap.
"Yes, a little bit, but anyway I am sure he didn't prepare his lap as well, so to be honest I don't understand it," he said. "You just need to ask him because maybe he thinks differently to what is the right direction."
Although Ferrari's qualifying pace was less than the team had expected after an encouraging opening day of practice, Massa still felt that there were opportunities for a good result in the race thanks to the likelihood of high degradation.
"We need to wait and see," he said. "For sure the degradation is high for everybody, so I hope we have good degradation tomorrow. We will see in the first stint, but now it is difficult to say. I hope we have a good degradation and, if that is the case, then I hope the race can be better."
"We expect to have a consistent car and I hope we have. It is not so bad the long runs we did, but I saw also the long run from Sebastian. He was very strong, very consistent, so we wait and see tomorrow how it is going to be, and then we can be a little bit more sure."