Monster Yamaha's James Toseland said the a bad start which cost him a good points haul after qualifying ninth at the Catalan MotoGP race was his fault as the bike bogged down off the line.

The former World Superbike Champion was 16th by the end of the opening lap but managed to claw his way back into the points at the end of the race, finshing a disappointing 13th.

“I'm really disappointed because I went into the race with high expectations after my best qualifying of the year. But I made a bad mistake off the line and gave myself a mountain to climb," said Toseland.

"The engine just bogged and I lost a load of time and had no chance of getting it back because everybody is doing similar times ahead of me. I also had a few set-up issues in the race and I'm not happy with that. I didn't have a lot of rear grip and we've got to work on the setting to find some rear grip when the tyre is starting to wear.

"After about eight or ten laps I was having a few issues with rear grip, but the bad start was what really cost me and that was my fault. It's frustrating because we've been going in the right direction and it had looked like we might have had a decent weekend. But I'll pick myself up and be ready to give it my all again for the Monster Yamaha Tech 3 Team in Assen.”