South African swimming champion and world record holder, Roland Schoeman, has been banned for a year after testing positive for a banned substance in May 2019. He was part of the team that won gold in the 4 by 100 meters relay in at Athens 2004 Olympics. Schoeman can challenge the ruling at the Court of Arbitration for Sport should he choose to appeal. Here’s CGTN’s Sias du Plessis with the details.