MOSCOW (AP) The International Cycling Union says Tatyana Antoshina, a road racer in Russia's national squad ahead of the Olympics in Rio de Janeiro, has been provisionally suspended after failing a drug test.
The UCI says Antoshina tested positive for GHRP-2, a drug which stimulates the body's production of growth hormone, in a test taken May 31.
Antoshina races for the Astana team and has won multiple Russian national titles in road racing and time trial events, including a national time trial title last month.
Listed on the Russian national team, she was considered the likely reserve for two-time Olympic medalist Olga Zabelinskaya in the road racing events.
Antoshina finished 12th in the time trial and 25th in the road race at the 2012 Olympics.