LONDON -- BMX cyclist Arielle Martin has withdrawn from the London Olympics because of injury.
USA Cycling says the 27-year-old Martin, of Cedar Hills, was injured during a training session on Tuesday and was taken to a hospital in San Diego.
The heartbreaking decision repeats a similar scenario in 2008 when Martin was injured in her final qualifying race and could not represent the U.S.
USA Cycling vice president Jim Miller says "she certainly would have contributed to our efforts in London and will be missed by the entire squad."
Miller will be replaced by 19-year-old Brooke Crain.
Martin, a former Lone Peak High and BYU graduate, wasn't going to leave for London until early next week.
"We are deeply saddened to learn of Arielle's injury while training this week in preparation for the 2012 Games," USA Cycling president Steve Johnson said in a statement Wednesday. "She is a true competitor and will be sorely missed in London. We wish her a complete and speedy recovery."
USA Cycling said Martin was hurt during "routine" training Tuesday at the U.S. Olympic Training Center in Chula Vista, Calif., and taken to Mercy Hospital in San Diego.
Officials did not disclose her injuries, but said they were not life-threatening and that Martin is expected to fully recover.
Martin finished fourth in last year's world championships. Crain, 19, was third at last year's BMX junior world championships and was ninth in last summer's Olympic test event.