Marc Marquez (Repsol Honda Team) took his fourth win of the year at Misano World Circuit Marco Simoncelli, with the conditions wet and the top three in the title fight lining up for the challenge on the front row. As the rain cleared, it was Danilo Petrucci (Octo Pramac Racing) just ahead of the reigning Champion on track until Marquez pounced on the last lap for a 25-point victory. The win puts Marquez and the Repsol Honda team back in the MotoGP Championship lead once again as Andrea Dovizioso (Ducati Team) came home third. Marquez and Dovi are equal on points and wins; Marquez leads the standings by virtue of more second places.
Despite the challengers on the front row in the San Marino GP, it was Jorge Lorenzo (Ducati Team) who got away first from his Row 2 starting position, taking the lead through the first two corners after tousling with Marquez and shooting away into the distance. Marquez fell into second with Dovizioso in third followed by Petrucci who moved around the outside of Maverick Viñales (Movistar Yamaha MotoGP) at the start of the second lap to begin his charge. After Viñales, the Pramac rider then shot past Dovizioso, beginning to close in on Marquez and then taking over in second.
After setting the timesheets alight and clear in the lead, Lorenzo suddenly high-sided out at Turn 6, leaving Petrucci in the lead.
Dovizioso began to fade backwards and the lead trio became a duo in the battle for the win. Petrucci held firm but Marquez chose his moment well, heading through at Turn 1 on the final lap. The rider from Cervera was then able to keep a small margin as the spray kicked up behind him, holding his nerve to take win number four of the year and the Championship lead.
Petrucci took second and his fourth premier class podium, 1.1 seconds behind Marquez who clocked the fastest lap of the race on the final lap. Dovizioso took a safe third place and his first podium finish at Misano. Pole-sitter Viñales took fourth to keep himself very much in the title fight.
Behind the front four, Michele Pirro (Ducati Team) once again impressed as a wildcard for the Borgo Panigale factory, completing the top five. Jack Miller (EG 0,0 Marc VDS) put in a signature performance in the wet from way down on the grid, for some time threatening Viñales for the top four before eventually crossing the line in sixth. Seventh over the line was a fight back from Scott Redding (Octo Pramac Racing), ahead of a quality ride from rookie Alex Rins (Team Suzuki Ecstar).
Jonas Folger (Monster Yamaha Tech 3) shot through the field from P16 on the grid to take ninth, with an impressive double act behind him for Red Bull KTM Factory Racing, as Bradley Smith took his first top ten with the Austrian factory and teammate Pol Espargaro crossed the line in eleventh.
Alvaro Bautista (Pull&Bear Aspar Team) took points in P12 and kept out of trouble, ahead of Cal Crutchlow (LCR Honda) in P13, who crashed in the early stages and remounted. It was a tough day at the office for Dani Pedrosa (Repsol Honda Team) who struggled to find grip and get heat into the tires, crossing the line in P14. Johann Zarco (Monster Yamaha Tech 3) supplied some late drama as he had a problem on the final lap, but managed to push the bike over the line for the final point.