Having navigated his way through tricky conditions in Saturday’s sprint race at Mugello to win from pole, Bagnaia did the same with ease in Sunday’s full distance contest.
Overtaken off the line by the KTM of Jack Miller, Bagnaia scythed past into Turn 2 to retake the lead and was never headed again across the 23-lap grand prix.
It marks his second sprint/grand prix double of the season and third Sunday victory of 2023, giving him a 21-point lead in the standings.
Marquez’s title hopes failed to find any improvement on Sunday at Mugello, as yet another front-end crash on his troubled Honda while running in the podium battle sent him into his third Sunday DNF of the season.
Bagnaia steadily pulled away from Martin, eventually getting to the chequered flag 1.067s ahead of the Pramac rider.
The final podium spot went to Martin’s team-mate Johann Zarco, who took third away from Marini on lap 18 after a brief duel.
Marco Bezzecchi on the sister VR46 bike retains second in the standings despite a lowly run to eighth.