An altercation with home favourite Valentino Rossi gave Marc Marquez "extra motivation" to triumph at the San Marino Grand Prix on Sunday.
Marquez had to start the race in fifth – his worst qualifying performance of the MotoGP season – after he and Rossi exceeded the track limits while vying for position on their final flying laps on Saturday.
The Repsol Honda rider managed to move up to third on the opening lap and soon passed Maverick Vinales, who finished third, before spending much of the race behind rookie sensation Fabio Quartararo.
Although Marquez's championship rivals Alex Rins and Andrea Dovizioso respectively crashed out and lacked pace, the reigning champion made a late push for the win and emerged triumphant from a last-lap battle with Quartararo.
Marquez was greeted with boos and chants of "Vale" when he took to the podium as the fans rued Rossi having to settle for fourth behind Monster Energy Yamaha team-mate Vinales.
"I knew it wasn't necessary to win because I saw Rins was out and Dovi was far [behind]. But honestly speaking, [Saturday] was the extra motivation, the extra push for the race," said Marquez.
"I tried to stay there and stay there and decided I'd try [to overtake] on the last lap. I knew Fabio was really fast in turn three so I tried to overtake him before that and then I closed the corners and tried to be smart.
"It's nice to win in Italy, but even nicer to lead by 93 points in the championship."
Quartararo had looked destined to become the second-youngest race winner in MotoGP but was left with a fourth podium of the season as consolation.
Nevertheless, the 20-year-old Petronas Yamaha rider was proud of his performance and having the chance to fight it out with Marquez at the head of the race.
"It was a tough race. I gave 100 per cent I think I made a good race," said Quartararo.
"But today is the first time we had a fight with Marc, we finished really close to the victory and I can say that was the best moment of my career fighting with a seven-time world champion.
"It was a great moment and I hope to be in this position again soon."