Reigning 125cc world champion Marc Marquez was fortune to escape injury when he suffered this spectacular crash (see below for full sequence) on his Moto2 debut in Sunday's season-opening Qatar Grand Prix.
The Spaniard, who had qualified second to eventual race winner Stefan Bradl, was fighting his way back up the order from a poor start when he high-sided from his Suter at turn five of the Losail circuit.
Marquez had reached sixth position when he crashed on lap 5 of 20.
"I'm fine, though I'm angry with myself because the team had done a great job for this grand prix. I want to apologise to them,” he said. “In the free practice sessions I felt really good on the bike, but I had a bad start and I wanted to recover too fast.
“As they say, you always learn the hard way and this crash will be a lesson for me. The first mistake was at the start and then I made the second, to rush. I am really angry because we were doing such a good job.
“I was worried about the start and the front of the bike jumped. The crash was when I was going out of the corner, as I opened the gas too early. The warm-up being yesterday is no excuse, as it is the same for everyone.
“We still have many kilometres ahead to learn and today the overeagerness to do well took its toll. I am certain I will learn from that mistake. It was a pity, as I had a good pace. Anyway, I hope everything goes better in Jerez."