European 400m individual medley champion Ilya Borodin has been ruled out of the Tokyo Olympics after testing positive for Covid-19, Russian team officials said.
The 18-year-old, who was expected to contend for a medal, failed a test during a final training camp in Vladivostok before departing for Japan.
"European champion Ilya Borodin passed a positive test for Covid-19, which is why he will not take part in the Olympic Games in Tokyo," the Russian Swimming Federation said in a statement late Wednesday.
It added that all other athletes and officials tested negative.
Borodin claimed the European title in Budapest in May in 4mins 10.02secs, a world junior record and the sixth fastest in the world this year.