Lewis Hamilton insists he did not gain an advantage by cutting through the first corner at the start of the Mexican Grand Prix.
The Mercedes driver, starting from pole, locked up when braking for Turn 1, going wide and cutting through the grass.
He rejoined after the first chicane with a big lead over his rivals before the race was neutralised under safety car for a mid-pack collision.
Later in the race, Max Verstappen was penalised for a similar move when he went off while defending from Sebastian Vettel.
While Verstappen's teammate Daniel Ricciardo and Red Bull's Helmut Marko believe Hamilton should have been penalised, the Briton said he actually damaged his tyres in the incident.
"I flat-spotted a tyre so that wasn't an advantage," said Hamilton. "I was still in the lead going in and still in the lead going out so I don't believe so.
"Basically on the formation lap I had a glazed right front brake. I had 500 degrees in the left and 200-250 on the right.
"I went to Turn 1 and the right front woke up and locked and I was carrying such speed. I was lucky I didn't go in the wall. After that I had the biggest vibration.
"I didn't know if I was going to make it. The vibration was so big I could hardly see."
Hamilton went on to win the race ahead of Rosberg, reducing the gap in the standings to 19 points.
The German admitted his teammate had simply been better.
"Lewis did a better job this weekend," said Rosberg. "He went into the corner first, came out first, so… you know, that's okay. Apart from that for me, there was a lot going on, quite eventful.
"But in the end, second place, I have to live with that. Lewis was quicker so he deserves the win, for me second was the best I could do."
With just two races to go, Rosberg will clinch the title in Brazil in two weeks if he wins the race.
"I'm aware of that, of course," he said. "It's better to be in front than behind. For me it's been working well to take the individual races as they come, and so going to Brazil I'll just try and get the win there."