Wimbledon champion Vondrousova gets 4-year ban for blocking doping control, appeals to CAS

Wimbledon champion Marketa Vondrousova has been handed a four-year suspension after refusing entry to a doping control officer who arrived at her home in June to collect samples. The Czech player denies knowingly breaking the rules. She has now taken her case to the Court of Arbitration for Sport (CAS) in a bid to clear her name.