The International Tennis Federation has appealed against a decision allowing French tennis player Richard Gasquet to return to the international circuit after testing positive for cocaine.
Gasquet was provisionally suspended in May after a sample he had provided in March in Miami tested positive for benzoylecgonine, a metabolite of cocaine.
In July, an independent tribunal set up under the tennis anti-doping programme found him guilty but ruled that he had been inadvertently contaminated in a nightclub.
He was banned for two months and 15 days, backdated to May 1st.
The tribunal ruled that his results, ranking points and prize money from subsequent events would stand.