Marc Marquez has been crowned the youngest MotoGP World Champion in history after a mature ride to third place in the final race of 2013 in Valencia.
The 20-year-old crossed the finishing line with his arms held high, sparking wild scenes of celebration at the Spanish venue.
The race was won by title rival Jorge Lorenzo on the Factory Yamaha from Marquez's team-mate Dani Pedrosa.
Marquez becomes the first rookie to win the premier class title since American legend Kenny Roberts in 1978 following a sensational debut year at the pinnacle of world motorcycle racing.
“I cannot explain what I feel – it's a dream come true and I maybe didn't expect to fight for the championship in the first year,” said Marquez.
“Jorge did a very good job but thanks to all my team.”
Outgoing champion Lorenzo, who deliberately slowed the pace in the opening stages of the race in an attempt to allow the chasing riders to join the leading group and challenge Marquez, added: “I tried on the first seven to ten laps to slow down the group, but when I saw that the other riders didn't catch the group, then I tried to go away and win this race.
“Marc has been a deserving champion and today is his day.”
Lorenzo, who broke his collarbone at Assen and underwent a second surgery after re-damaging it next time in Germany, won eight of the 18 races, with six wins for Marquez. Lorenzo lost out on a third title by just four points.
Valentino Rossi finished the race in fourth position with the top six completed by Alvaro Bautista and Stefan Bradl, with Bradley Smith - who qualified in sixth - ending the race in seventh place.
There was disappointment for Cal Crutchlow in his final race for the Yamaha Tech 3 team prior to his move to Ducati as the 28-year-old crashed out unhurt.
Lorenzo made a flying start as he powered into the lead from Honda pair Pedrosa and Marquez, with Rossi right in the mix in fourth.