Last Updated: August 30, 2011 10:44pm
Happier times: Debbie Flood (far left), Beth Rodford (2nd left) and Annabel Vernon (far right) missed out on retaining their world crown on Tuesday
Great Britain's reigning women's quadruple sculls world champions have failed in the defence of their crown.
Mel Wilson, Beth Rodford, Annabel Vernon and Debbie Flood - the latter three of whom all won gold last year - failed to reach this year's final on Slovenia's Lake Bled on Tuesday.
The quartet finished third in the repechage - just 0.75 seconds behind second-placed China - and must now win Thursday's B final to book a place at the London Olympics.
Vernon said: "That's sport, you've got to be on the right side of those margins when it counts. We have no one to blame but ourselves."
The GB men's quadruple sculls team came through their repechage to reach the semi-finals, while Adam Freeman Pask reached the semi-finals in the international class lightweight men's single scull.
There was joy for the Paralympic-class mixed adaptive double pair of Nick Beighton and Sam Scowen, who became the first boat to confirm their place at the London Games.
The pair finished second behind Australia in their repechage but secured the top eight place.
Beighton said: "It's a big relief to qualify for the games. That has been our target here all along."
DOB: 17/5/1956 Event: Boxing Medals: 1 gold Flag: USA
A week into the Games of the XXX Olympiad, Richard Moore brings us his half-way highs and lows
Linford Christie sprinted to 100m gold for Britain at an Olympic Games best remembered for America's basketball dream team.