Why was Mudryk given ban in secret and what happens now?
"Data may be shared with a number of third parties. As well as sharing data with Ukad, information may be shared with the police where there is evidence of criminal conduct, with Uefa and Fifa and any other relevant event organisers and international federations with doping responsibility, as well as the World Anti-Doping Agency. "Information about testing and outcomes may also be shared with your club.
" Cases often only become public knowledge when a player has been absent from their team's playing squad for a period of time without proper explanation. Outcomes and punishments are usually officially made public once the process has concluded but this may be delayed until any appeals have also been exhausted. Mudryk scored 10 goals in 73 appearances for Chelsea between his arrival from Shaktar Donetsk and his suspension The exact prohibited substance for which Mudryk tested positive has never been named by the FA, but BBC Sport understands it is the cardiovascular medication meldonium, which has the potential to increase respiratory capacity and stamina, which he came into contact with while on duty with the Ukraine national team.
Last year, a spokesperson for the Ukranian FA (UAF) told BBC Sport none of its staff were involved in the case. "UAF officials cannot comment on this matter since the UAF is not a part of this case," it told BBC Sport. "The World Anti-Doping Agency (Wada) or the English FA didn't send any request to the UAF.
"We are in close contact with Mudryk's lawyers and provide them with all necessary information. We cannot comment further as a non-disclosure provision is in effect. " It remains unclear how exactly Mudryk apparently ingested meldonium, which has been banned by Wada since 2016 and is primarily used in Eastern European countries to treat conditions such as angina, heart failure and coronary artery disease.
Tests at the 2015 European Games in Baku found that 13 medallists were taking the substance at the time and that its use occurred in the majority of the sports included in the tournament. Wimbledon champion Maria Sharapova failed a drugs test in March 2016 after meldonium was detected in her sample. Mudryk has been suspended and unable to play for either Chelsea or Ukraine since the FA provisionally suspended him 16 months ago.