Van der Merwe ended his twelve-year career as a professional athlete by winning bronze in the Rio 2016 Paralympics, in the 100m T37. He gave his all and clocked a time of 11:54, the same as the silver medalist. He unfortunately had to settle for the bronze medal as his component went for the head dip before him. Van der Merwe was the defending champion, having won gold in both Beijing 2008, and London 2012. The 30 year old handed the baton over to his 23 year old teammate Charl du Toit who won gold and set a new world record.