The International Tennis Integrity Agency suspended 2017 national champion Dalwinder Singh for using the prohibited substance morphine on Thursday.

Singh, who reached a career-high world singles ranking of 791 in April 2017, tested positive for morphine in March 2025 while competing in an ITF World Tennis Tour event in Chandigarh.

During the period of ineligibility, Singh is prohibited from playing in, coaching at, or attending any tennis event authorised or sanctioned by members of the ITIA, comprising names from the ATP, ITF, WTA, Tennis Australia, Fédération Française de Tennis, Wimbledon, and USTA, or any national association, the ITIA said in a release.

Morphine is prohibited under the TADP, in the category of Narcotics, section S7 of the 2025 World Anti-Doping Agency Prohibited Li

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