Spain's Jorge Lorenzo began his MotoGP title defence in style with an emphatic win in the season-opener at Qatar's Losail International Circuit on Sunday.
The Yamaha ace charged to the 24th win of his MotoGP career, finishing 5.990 seconds ahead of teammate and seven-time MotoGP champion Valentino Rossi.
MotoGP rookie Marc Marquez of Honda took a superb third on his debut in the top division, staged under floodlights.
Pole-sitter Lorenzo held the lead right from when the start and held on till the chequered flag while the rest of the field behind him traded places.
"I knew it was going to complicated. I'm happy that Valentino came back in second place, it's good for Yamaha," Lorenzo told BBC television.
Rossi, who had had an ordinary weekend going into Sunday's race, came into his own in the final stages of the race, going past Honda riders Dani Pedrosa and Marquez in quick succession.
Im Moto2, a tightly-fought duel between Catalan Po Espargaró and Englishman Scott Redding for the first win of the Moto2 season ended in the Spaniard's favour.
Espargaró started his charge for the Championship in the best possible manner with victory at the Grand Prix of Qatar, which he took from pole position.
He managed to hold off a persistent and courageous challenge from Scott Redding, as the pair fought for the win right down to the final lap.
Moto3 produced another thrilling Spanish win in the season opener at Losail, where Majorcan Luis Salom rode a perfect race.
Salom rode an awe-inspiring race to win the first of the Moto3 season at the Quatar's Grand Prix on Sunday, as the category produced another incredible spectacle that went down to the last lap.