Rio de Janeiro: Thirteen-year-old Gaurika Singh, the youngest athlete at the Rio Olympics, won her heat in the women’s 100 metres backstroke Sunday after getting into a flap over a torn swimsuit. The Nepali schoolgirl, who survived the killer earthquake that claimed 9,000 lives in her native country in April last year, quickly changed into a new costume before plunging into the pool for her moment of glory. “It feels amazing,” grinned Singh after winning her race in one minute, 8.