Newly-crowned World MotoGP champion Marc Marquez claimed a record-breaking 13th win of the season in Valencia.
The Spaniard's victory in the final race of the championship beat Australian Mick Doohan's record of 12 race wins in a season, set in 1997.
Marquez led from the 11th lap on his Honda and finished in 46 minutes 39.627 seconds, ahead of Valentino Rossi and team-mate Dani Pedrosa.
Rossi secured second spot in the championship ahead of Jorge Lorenzo.
It was a special Sunday all round for the Marquez family after Marc's 18-year-old younger brother, Alex, clinched the Moto3 crown earlier in the day.
Marc Marquez had started fifth on the grid in Spain after a crash in qualifying on Saturday, but quickly moved up to third behind Yamaha rider Rossi and Ducati's Andrea Iannone.
He then passed Rossi on lap ten and Iannone a lap later, before sealing a comfortable victory despite some intermittent spells of rain.
The 21-year-old said: "The truth is I'm very, very happy. During the race, at times, I was thinking of my brother and thought I had to do well.
"When it started to rain, I just had to concentrate and then I was out on my own. I was enjoying it a lot and I thought I would risk it, I didn't have anything to lose.
"It went well and now I have to celebrate."
Britain's Cal Crutchlow finished fifth, just behind Ducati team-mate Andrea Dovizioso.
Second place in the overall standings was Rossi's best finish since he won the last of his seven premier class world titles in 2009.
|MotoGP championship standings|
|Marc Marquez (Spa) Honda||362 points|
|Valentino Rossi (Ita) Yamaha||295 points|
|Jorge Lorenzo (Spa) Yamaha||263 points|
|Dani Pedrosa (Spa) Honda||246 points|
|Andrea Dovizioso (Ita) Ducati||187 points|
Valencia MotoGP result:
1. Marc Marquez (Spa) Honda 46:39.627
2. Valentino Rossi (Ita) Yamaha +3.516
3. Dani Pedrosa (Spa) Honda +14.040
4. Andrea Dovizioso (Ita) Ducati +16.705
5. Cal Crutchlow (GB) Ducati +16.773
6. Pol Espargaro (Spa) Yamaha +37.884
7. Aleix Espargaro (Spa) Yamaha +38.168
8. Stefan Bradl (Ger) Honda +41.803
9. Michele Pirro (Ita) Ducati +45.710
10. Scott Redding (GB) Honda +51.191