The Italian emerged the winner after his main championship rival Sete Gibernau went off the track at the last corner.
Dani Pedrosa has agreed a two-year contract extension that will keep him at Honda until 2012.
Italian MotoGP great Valentino Rossi plans to keep on racing until he is nearly 40 after signing a new contract for the 2017 and 2018 seasons with Yamaha that should see out his career at the Japanese manufacturer.
Honda's former world champion Nicky Hayden set the pace on the final day of MotoGP's official pre-season test at the Jerez circuit in southern Spain on Monday. The American, who lost his crown to Ducati's Australian Casey Stoner last season, clocked the fastest time of the test with a lap of one minute 38.848 seconds at the end of the afternoon.
World champion Jorge Lorenzo won the Japanese Grand Prix ahead of championship leader Marc Marquez to ensure the MotoGP title race goes down to the final round of the season at Valencia next month.
Spaniard Dani Pedrosa denied compatriot Jorge Lorenzo a fourth win in a row at the German MotoGP on Sunday while world champion Valentino Rossi narrowly missed a podium finish on his return from a broken leg.
Twice MotoGP world champion Casey Stoner said on Thursday he had lost his love for the sport and would retire at the end of the 2012 season.
MotoGP championship leader Valentino Rossi will start the season finale in Valencia from the back of the grid after the Italian was penalised for clashing with Marc Marquez at the Malaysian Grand Prix on Sunday.
Victory moved Quartararo to 50 points in the world championship standings, 10 points ahead of Vinales.
Kato suffered severe injuries to his head, neck and chest in the crash during the season-opening race on April 6.
Valentino Rossi rolled back the years to win his sixth premier class Australian Grand Prix on Sunday after world champion Marc Marquez's cruise to a pole-to-flag victory was ended suddenly by a crash on lap 18.
World No 4 Petra Kvitova sealed the Fed Cup title for the Czech Republic by beating Angelique Kerber 7-6, 4-6, 6-4 to give her country an unbeatable 3-0 lead over Germany in the final on Sunday.
A summary of sportspersons in the news on Sunday.
Six-times MotoGP world champion Marc Marquez can celebrate his first win of the season on Sunday when the Spaniard takes part in a virtual race from the comfort of his home. The season is not due to start until mid-May at the earliest.
Dani Pedrosa streaked away to win the Catalan Moto GP in Barcelona for his second victory of the season.
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Spain's MotoGP world champion Marc Marquez won the German Grand Prix from pole position on Sunday for his sixth win in a row at the Sachsenring in a Honda one-two with compatriot Dani Pedrosa.
Championship leader Rossi wants a penalty, imposed on him after he allegedly kicked Honda's reigning champion Marc Marquez off his bike in Malaysia last Sunday, to be at least suspended so he can race on equal terms.
Jorge Lorenzo's celebration of his MotoGP world title on his home island of Mallorca on Thursday was interrupted unexpectedly when the Spanish Yamaha rider suffered what appeared to be minor burns to his leg from a motorcycle.
Defending champion Marc Marquez won the Aragon MotoGP on Sunday to take a 16-point lead in the world championship standings. Honda team mate Dani Pedrosa was second and Jorge Lorenzo third for Ducati.
Dani Pedrosa ended Honda team mate Marc Marquez's hopes of winning 11 consecutive MotoGP races this season with victory at the Czech Republic Grand Prix on Sunday.
Yamaha's Valentino Rossi won MotoGP's Dutch TT race from pole position on Saturday after a thrilling duel with world champion Marc Marquez in which the pair clashed at the final corner.
Italian Valentino Rossi emerged triumphant in the Argentine MotoGP Grand Prix despite a clash with World champion Marc Marquez in the second-last lap which saw the Spaniard crash out.
Australian Casey Stoner ran away with the Dutch GP on Saturday to go level with Yamaha's Jorge Lorenzo at the top of the MotoGP championship after the Spaniard was taken out at the first corner.
Spanish rookie Marc Marquez became the youngest ever MotoGP world champion at the age of 20 when he finished third in the 18th and final race of the season in Valencia on Sunday.
Summary of sports events and persons who made news on Sunday.
Italian Valentino Rossi extended his contract with Yamaha to the end of 2008.
A summary of sports events and sports persons, who made news on Saturday
Spanish world champion Marc Marquez became the first man in 17 years to win 10 consecutive MotoGP races when he rode to a comfortable victory at Indianapolis on Sunday.
Dani Pedrosa put on a wet-weather master class to capture a rain-shortened Malaysian Grand Prix on Sunday and keep the pressure on MotoGP championship leader Jorge Lorenzo after notching a fifth victory in six races.
Honda Gresini have pulled out of the season-ending Valencia Grand Prix following the death of Italian MotoGP rider Marco Simoncelli in Malaysia on Sunday.
MotoGP great Valentino Rossi will not be retiring from the sport in the wake of friend Marco Simoncelli dying after a crash with his fellow Italian, Rossi's mentor said Monday.
Italian MotoGP rider Marco Simoncelli has died after a horrific crash at the Malaysian Grand Prix in Sepang on Sunday.
The impressive riding dynamics of the Gixxer now get a sporty full fairing that makes this 155cc offering from Suzuki a lot more desirable, says Indian motoring website MotorBeam.
Australia's Casey Stoner stormed to his second successive victory for Ducati at Sunday's Japanese Grand Prix while MotoGP World champion-elect Jorge Lorenzo finished fourth. Andrea Dovizioso of Italy and Valentino Rossi finished second and third respectively.
Italian MotoGP rider Marco Simoncelli died after a horrific crash at the Malaysian Grand Prix in Sepang on Sunday, completing a harrowing week for motorsport after British IndyCar driver Dan Wheldon lost his life last weekend.
Honda's Dani Pedrosa won the U.S. MotoGP Grand Prix on Sunday, the Spaniard's first victory in over a year, by holding off a late challenge from world champion and current leader Valentino Rossi.
MotoGP championship leader Jorge Lorenzo of Spain enjoyed his fourth win of the year with victory in the Dutch TT race at Assen on his Yamaha on Saturday.
Spain's Jorge Lorenzo won the French MotoGP at Le Mans on Sunday to extend his world championship lead over Yamaha team-mate Valentino Rossi to nine points.