The U.S. team is on the verge of being shut out of the medals race despite having the SuperBike, a high-tech creation that's considered the best bike in the world.
The men's pursuit team was ousted in shocking fashion along with Rebecca Twigg, who ditched her SuperBike after a disappointing individual pursuit race on Thursday, but fared no better on a conventional bike.
Only two of 11 Americans remain in contention for a cycling track medal: Marty Nothstein, of Trexlertown, Pa., in the sprints and Brian McDonough, of Winston-Salem, N.C., in the points race.
The pursuit team, which finished third at the world championships last year, was a disappointing sixth in qualifying and was eliminated in the quarterfinals by world-record holder Australia.
Twigg, 33, failed in her quest for gold to go with her silver and bronze from past Games when she was beaten by Germany's Judith Arndt in the quarterfinals of the 3,000-meter pursuit.