BEIJING — The Olympic dream has ended early for a bantamweight boxer from Capitol Heights, Md.

Gary Russell Jr. collapsed while trying to make weight and will miss the games. His exit means the American boxing team will be without one of its top medal hopes.

U.S. coach Dan Campbell says Russell was found unconscious and severely dehydrated early Friday morning by his roommate, light flyweight Luis Yanez.

Medical personnel at the athletes’ village rehydrated Russell, but he wasn’t healthy enough to participate in Friday’s weigh-in.

Russell is a two-time national champion. He hadn’t competed at 119 pounds since the world championships in Chicago last fall. He has fought at 125 pounds or more in every test event and dual meet since.