Former sprinter Craig Pickering has been forced to withdraw from the British bobsleigh team for the Winter Olympics in Sochi due to a back injury.
Pickering, who was part of the 4x100m relay squad in Beijing in 2008, had been set to become only the eighth athlete to represent Great Britain at both a summer and winter Games.
Pickering, who had been due to race on both the two-man and four-man events at the Sanki Sliding Center, sustained his injury last Sunday during the team's pre-Olympic training camp in Konigssee, Germany.
Pickering said he was "devastated" to be missing out on the Games after suffering what Team GB officials described as an L3-4 acute disc prolapse.
Pickering said: "Having missed out on competing at the London 2012 Games due to a back injury I am devastated to have suffered a similar fate just days before the start of the Sochi 2014 Olympic Winter Games.
"We worked so hard to qualify the GBR 2 sled for the Games and I am gutted that I won't be on the start line with Lamin (Deen), John (Baines) and Ben (Simons).
"I would like to thank all the staff at British Bobsleigh who have been incredibly helpful in making sure I've had the best support and treatment both in Germany and back in the UK.
"I will be cheering the boys on from the UK and wish the rest of Team GB the best of luck in Sochi."
Pickering had helped Deen squeeze into a qualification place in the final week of the regular World Cup season in both the two-man and four-man disciplines.