Jorge Martin has led the San Marino Grand Prix in Misano Adriatico from start to finish to complete a second sprint and main race double of the season on his Pramac Racing Ducati and cut Francesco Bagnaia’s championship lead to 36 points.

The Spaniard finished 1.35 seconds ahead of Marco Bezzecchi of VR46 Racing, who was hampered by a wrist injury he suffered at the Catalan Grand Prix.

Ducati’s MotoGP world champion Bagnaia, who had his leg run over in a separate crash last week, finished third in Sunday’s race.

Australian Jack Miller didn’t finish the race after he and Ducati’s Michele Pirro came together and both crashed.

“As I turned, Pirro centre-punched me in the middle of my ribs,” Miller said.

“That was it. Not much more to say, really. It wasn’t the best weekend for us. It’s sh***y to end a race like that.”

Miller has struggled recently with rumours he could be demoted to a test driver with a best finish of 8th in his last five races.

“We know we can ride, we know the bike is good, it’s just getting my confidence and comfort level back up,” he said.

“It’s understanding what we need to make it click again, we’re working tirelessly, myself and the team. I’m trying to take as much as possible, work as much as possible, to get comfortable.

“To ride differently, do whatever I can do in terms of riding style to become better. It’s just one of those processes that take a little bit (of time).”

Bagnaia is now top of the riders’ standings with 283 points, with Martin (247) in second and Bezzecchi (218) in third.

After his sprint and race double this weekend and a third-place finish in Catalunya, Martin has reduced Bagnaia’s lead by 30 points in just two weeks.

“Winning here in Italy, in front of the Italian guys, that’s big,” Martin said.

As they did in Saturday’s sprint race, the trio of Martin, Bezzecchi and Bagnaia shot off the line and built an early gap to the rest of the pack, turning the race into a three-way shootout.

While the sure-footed Martin led throughout the race, Bezzecchi had to contend with early disappointment, after he briefly overtook Bagnaia for second but then immediately ran wide on the next turn to fall back into third.

However, as the race wore on, the injuries from the Catalan GP appeared to take their toll on Bagnaia, and Bezzecchi once again leapfrogged him in the 19th lap. On the second time of asking, the 24-year-old made the move stick.

A fading Bagnaia required a Herculean performance to finish on the podium, fending off a string of late attacks in a hard-fought battle for third with wildcard Dani Pedrosa

Veteran Pedrosa’s creditable fourth-placed finish at least gave KTM some reason to cheer, after they suffered a double blow when Brad Binder and Miller crashed in successive laps.