SMU School of Social Sciences undergraduate Yip Pin Xiu is set to register another breakthrough at the Paralympics this evening (6.52am, Singapore time, tomorrow). Pin Xiu, who has been re-classified from an S3 to an S2 swimmer, will be bidding to become the first Singaporean to win multiple gold medals at the same Games. She had won a gold (50m back S3) and a silver (50m freestyle S3) on her Paralympic debut at the 2008 Beijing edition. Last Saturday at Rio's Olympic Aquatics Stadium, she had triumphed in the women's 100m backstroke S2 event, securing Singapore's first silverware in Brazil.