Tech 3 Racing Team rider Bradley Smith's season ended in disappointing fashion with the Oxford-born star finishing in 23rd place in Valencia.
Smith crashed out at the second corner on lap two, hurting the collarbone he broke a fortnight ago, but suffered no further damage and rejoined the race.
The 20-year-old will ride in the MotoGP World Championship in 2013 and 2014.
"I am really disappointed with the crash because I had a very good first lap," said Smith after the race.
"I was aggressive and I had a very good feeling with the bike even though the conditions were far from ideal.
"I passed [Mika] Kallio going into the first corner and was looking to push on when he was quite aggressive at turn two. I had a big slide from the front and rear tyres and it was impossible to save it.
"The race pretty much summed up my luck in the final part of the season and I seem to have been followed by bad luck for a few weeks now.
"It is a shame that we couldn't finish the season with some stronger results but we have proved capable of fighting for the top five on a regular basis.
"Luckily it was quite a slow crash at that part of the track and my shoulder didn't suffer any damage."
The race was won by Italian rider Michele Pirro on his Moriwaki but newly-crowned world champion Stefan Bradl, of Germany, was not able to celebrate in style as he crashed out on the fourth lap when lying in sixth place.
Smith, though, is confident his team can improve for his final season in Moto2.
"We're confident we have made big improvements with the new bike that will help me fight at the front consistently next season," he added.