LAUSANNE, Switzerland — Several U.S. runners have lost a preliminary ruling in their fight to keep the Olympic relay medals stripped because of Marion Jones’ doping offenses.

The Court of Arbitration for Sport on Friday rejected a motion by the runners against a decision by the International Olympic Committee to take away their medals from the 2000 Sydney Games.
Jones, who has admitted using banned drugs, helped the U.S. women win gold in the 1,600 relay and bronze in the 400 relay.
Jones has been stripped of her five medals, including gold in the 100 and 200 meters and bronze in the long jump. The IOC stripped all the relay medals last year.
CAS upheld the IOC’s right to decide on the medals. The court will now summon the parties to a hearing on the merits of the case.