The U.S. Anti-Doping Agency's (USADA) increased testing of masters amateur cyclists continues to produce results.
Americans take first and second in Tour de l'Avenir stage 4 TT. Adrien Costa, 19, won the 16.5km test ahead of his teammate Nielson Powless.
Bradley Wiggins and five of his Team Wiggins teammates will compete at the eight-day, nine-stage race.
Emilia Fahlin won Sunday's Crescent Vargarda road race in front of a home crowd in Sweden, claiming her first Women's WorldTour victory.
Nino Schurter wins a gold medal ahead of Jaroslav Kulhavy and Carlos Coloma
Katusha adds reigning under-23 world TT champ Mads Würtz Schmidt for the next two years
Nino Schurter delivers a dominant performance in Rio to take home a gold medal in cross-country mountain biking
Ewan takes the EuroEyes Cyclassics victory after Bouhanni is relegated for leaving his line
Jenny Rissveds rides to an Olympic title on the Rio mountain bike course
22-year-old Jenny Rissveds leaves the veterans behind and claims a gold medal in RIo