Football presenter Gary Lineker has issued a sarcastic response to claims that Russian skater Kamila Valieva's positive doping result was due to sharing a glass with her grandad.
The scandal surrounding the 15-year-old continues to plague the games, after she played a pivotal role in the Russian team winning team gold last week.
However, the medal ceremony was then postponed after it emerged that Valieva, who had sensationally become the first figure skater to land a quadruple jump at an Olympics, had tested positive for Trimetazidine.
