Valentino Rossi and Casey Stoner exchanged words in parc ferme over a number of incidents in Sunday's MotoGP round at Laguna Seca.
The pair battled for the lead for 24 of the 32 laps, passing and re-passing each other several times. Rossi spent the most time in front and was ahead when Stoner ran wide at the last corner and dropped his bike in the gravel.
That granted Rossi an easy run to his maiden victory at Laguna, while Stoner recovered to finish second but complained about Rossi's riding after the race.
A brief conversation in parc ferme when Rossi attempted to shake hands with Stoner was caught on the BBC's live television coverage:
Rossi: "Great race."
Stoner: "No, you can't race this way."
Rossi: "That's racing, Casey."
Stoner: "That's racing? Ok, we'll see."
Stoner explained his complaint, claiming that some of Rossi's overtaking moves crossed the line between aggressive and 'too much'.
"It was about two or three moves, I think everybody will have seen them," he told the BBC. "A couple of other moves were alright, nice and clean, but there were a couple I wasn't happy with.
"I've been in hard racing all my life, some very aggressive racing, but today was a little bit too much. I nearly went in the gravel so many times and I don't think it was necessary. I was so nearly on the floor it wasn't funny."
The Australian later expanded on his view, and also suggested that Rossi braked earlier than usual at the final corner which caused him to run wide before falling in the gravel.
"I was just trying to find a point where I could get past where I knew he wasn't going to come barreling up the inside and wipe us both out," said Stoner. "We're here to try to score points, not to end a race. Even when I ran wide in the corner I could easily have gone into the back of Valentino and both of us gone down.
"He seemed to brake a lot earlier than normal. I nearly stayed on the track and I'd completely let off the brakes just to get it round to the right of him. I'm disappointed with my mistake. I could have caught it, I suppose. He'd done it a few times in the race so I should have been expecting it, but that time I just couldn't stop quick enough. I felt like I was going to plough into the back of him so I just let the brakes off and went around."
When asked whether the outcome of the race makes him think he should be more aggressive in future, Stoner replied: "I don't know whether I should because I've had problems before. I got fined two years ago for getting slightly in the way of Dani Pedrosa on a qualifying lap. I didn't mean to but I got fined for it.
"Dani or Valentino wouldn't get fined for this, but I get fined for it. So I'm worried if I do the same display I'll have punishment put on me, so I prefer to stay away from this and ride clean, aggressive but clean. If everything's kept fair and square it's alright, but I'm wondering sometimes whether they make decisions for certain reasons.
"But, look, Valentino rode a great race and I have nothing against that, just a couple of his overtaking moves, for me, were past the point. But I spoke to him about it on the podium and we'll just get on with the next weekend."
Rossi dismissed the claims of over-aggression, telling Italia1 television: "What a great race. I'm sorry Stoner complained. I understand our fight was very aggressive, but I think he complained most of all because he ended up behind. I'm very sad that he was angry at the beginning but I think after a race like this it's normal when you arrive behind.
"I think the battle was normal, I never touched him, I never ran wide. The overtaking moves were tough but I always passed under braking, which is where I'm stronger. This is racing and every overtake was very clear for me.
"The only time he tried to pass me he touched me with the wheel on the elbow, so I should be more upset than him!"
He was also quick to deny that he braked earlier than usual at the final corner on the lap of Stoner's fall.
"No, no, no. I never make this type of thinking in my career and I become angry if he says this," said Rossi. "I'm good to overtake, not to brake before. I think he made a mistake and you need to admit when you made a mistake. I didn't brake before, for sure. I didn't even know he crashed, I saw the next lap."
Rossi added that he was genuinely quick enough to win the race and warned Stoner that he is fighting hard to win the championship.
"I was going quick and, except on the front straight where the Ducati is a bit quicker than our bike, I don't think I was slowing him down. I wanted to win, Stoner cannot think we're here to play games: we're fighting to win, this is racing.
"I've been racing for a long time and, except for these last few years, I remember races to be like this and no one ever complained. Casey is very strong, but we are fast and we are ready for the battle."
The Italian went on to describe one of the moves that Stoner wasn't happy with, where Rossi squeezed past Stoner into the Corkscrew and bounced wide over the gravel as he dropped down the hill.
"It was fun, like an old style race with some hard overtaking back to back. That move was fantastic, he braked late but I braked even later. We went a bit wide but that's a peculiar corner so it can happen. When I realised I was going on the gravel I worried a bit, but the gravel here has good grip!
"In the end, it was the most important victory this year and I think I deserved it. Anyway, he made his mistake alone."
Stoner complains about Rossi’s overtakingLancaster takes maiden F3 victoryAlguersuari on pole for race twoRapids take command of West