A sample was taken from the Australian during the Mallorca Open in June.
Nick Kyrgios says he "made a huge mistake", after being provisionally suspended from tennis for testing positive for cocaine.
A sample taken from the Australian during the Mallorca Open back in June was found to contain a metabolite of the substance.
The former Wimbledon finalist has been banned from tournaments since August 4th, pending the outcome of a tribunal.
Posting on Instagram, the 31-year-old added that he takes "full responsibility" for the positive test.

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