Two positive drug tests

Two athletes have exited the Games after positive drug tests. South African race walker Lebogang Shange has been banned for four years for doping. The former African champion was entered in the men’s 20km race on August 5. The Court of Arbitration for Sport ruled on the case in Tokyo. And the Swiss Olympic team says 400m hurdler Kariem Hussein has accepted a nine-month ban after testing positive for a banned stimulant.