Great Britain's four-man bob crash in Whistler

From Sportsbeat staff, in Vancouver

 JOHN James Jackson's nightmare Olympic debut continued as the Great Britain quartet suffered a nasty crash in the second run of the four-man bobsleigh competition.

ROLLING OVER: John Jackson suffers the same fate as in the two-man, rolling his four-man sled at the tricky Whistler Sliding Centre track (Getty Images)

The foursome of Jackson, Dan Money, Allyn Condon and Henry Nwume began their campaign well enough and placed 11th after heat one, but they could not follow suit on their second run on the lightning fast Whistler track.

Jackson and Money crashed in their opening run of their two-man bobsleigh campaign and again suffered a nasty spill at the treacherous corner 13, dubbed 50-50 by competitors in reference to the chances of remaining upright.

The British bob did slide down the remainder of the track but they are now placed 13th after their two runs with eight crews still to go, leaving their hopes achieving a top ten finish in tatters.

"I made a mistake, I went a little bit too high on the exit of 11," said Jackson. 

"Obviously we're disappointed, but we're fine. We've got a couple of bumps and bruises. The sled has a few scrapes.

"We'll have a closer look at it later, but if it's fine we'll be back again tomorrow."

Medical staff rushed to greet the British quartet but there were no serious injuries, only bruised egos with Money hurling his helmet onto the ice in frustration.

Great Britain are not the only four-man crew to struggle in Vancouver however, as 11 out of the 29 teams have suffered a crash at some stage in Whistler.

But it does compound a miserable bobsleigh showing from Great Britain in Whistler with Jackson crashing in both competitions, while reigning world champions Nicola Minichiello and Gillian Cooke suffered a spill on their third run.

 AS IT HAPPENS: Day 15 of the 2010 Winter Olympics in Vancouver