also come back positive. he was in the team that won a silver medal in the team that won a silver medal in the 4x100m relay in tokyo and it looks certain those medals will be rescinded. we can go to the bbc sport centre for more. a really huge moment for the great british athletics team?— moment for the great british athletics team? , , .. , athletics team? huge news because when an athlete _ athletics team? huge news because when an athlete test _ athletics team? huge news because when an athlete test positive - athletics team? huge news because when an athlete test positive for. athletics team? huge news because when an athlete test positive for a l when an athlete test positive for a banned substance you can request for the b sample to be tested to make sure there is no error in the procedure or the sample was not contaminated but as you say, the b sample has come back positive as well. what will happen is it will be referred to the court of arbitration for sport and cj ujah and his legal team will have the opportunity to provide any information they feel can help to clear his name and he said being the first sample was tested he was shocked and devastated and would never knowingly cheat. they will get the opportunity to do that in this hearing with the court of arbitration. he is in a difficult