Jorge Lorenzo won his third MotoGP title with a victory at the season-ending Valencia GP on Sunday as Valentino Rossi failed to make up enough ground on his Yamaha teammate from the back of the grid.
Lewis Hamilton slipped and skidded around the Circuit of the Americas, then retreated to the Mercedes garage.
Spain's Dani Pedrosa cruised to victory in the Malaysian MotoGP Sunday, with Jorge Lorenzo snatching second place to cut into championship leader Valentino Rossi's points lead.
Alexander Rossi will become the first American Formula One driver to race on home soil for eight years when he lines up for the Manor Marussia team in this weekend's United States Grand Prix.
Thirty miles away from the Circuit of the Americas, with its iconic red, white and blue racing stripes and grandstands that will be filled with more than 100,000 fans for the United States Grand Prix, Lewis Hamilton was being a kid again.
Reigning world champion Marc Marquez produced a sizzling final lap, snatching the lead from Jorge Lorenzo three corners from home Sunday to win a thrilling Australian MotoGP at Phillip Island.
Defending world champion Marc Marquez claimed pole position ahead of Andrea Iannone with Valentino Rossi seventh in Saturday qualifying for this weekend's Australian MotoGP at Phillip Island.
Toro Rosso driver Carlos Sainz Jr. has been declared fit to compete in the Russian Grand Prix after a high-speed crash in practice left him in hospital.
Craig Lowndes and Steve Richards teamed to win Australia's most prestigious motor race, the Bathurst 1000, on Sunday after their Holden started from 15th place on the grid.
The UK's Lewis Hamilton blazed to victory at the Japanese Grand Prix ahead of Mercedes teammate Nico Rosberg on Sunday to strengthen his grip on a third world title.