UPDATE 2-Dovizioso wins San Marino GP for Ducati
Local favorite Valentino Rossi managed only a distant seventh for Yamaha and lost second place overall to Dovizioso who now has 154 points to Spaniard Marquez's 221 with six races remaining. Rossi has 151.
Ducati's Jorge Lorenzo, who had started on pole position at the Marco Simoncelli circuit on Italy's Adriatic coast, crashed out on the penultimate lap while heading for a Ducati one-two finish.
That lifted Britain's Cal Crutchlow, whose home race at Silverstone last month was canceled due to heavy rain and drainage problems, to third as the leading non-factory finisher on an LCR-Honda.
"That was the only way to win today because Jorge was very strong and beating Marc was very difficult," added the Italian.
The win was Dovizioso's first at Misano and third of the season as well as his team's third in a row. Lorenzo had won in Austria while his teammate triumphed in the Czech Republic before that.
"It was so difficult," said Marquez, who made the point that Ducati had tested at Misano while Honda had not. "When I saw that Dovi was so strong today my target was to finish second and to lose only five points.
"I'm disappointed that Jorge crashed but we were both pushing a lot because Dovi was there in front."
Italian Moto2 rider Romano Fenati was banned for two races after leaning over on the straight and grabbing the brake lever on rival Stefano Manzi's bike following an earlier clash.
Stewards ruled he had "deliberately attempted to cause danger to another rider by interfering with his machine whilst on track".
Fenati was immediately shown the black flag, disqualifying him from the race, but Crutchlow felt the rider had got off lightly.
"I think he should never race a motorcycle again," Crutchlow told reporters. "He should have walked back to the garage and his team should have just kicked him straight out the back."
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)