World champion water-skier Sarah Teelow has died following a fall during a high-speed race on Australia's Hawkesbury River. The 21-year-old came off her skis shortly after the start of the Bridge to Bridge Water Ski Classic near Sydney on Sunday. She suffered serious spinal and head injuries and later died in hospital. Teelow won the Formula 2 category at the World Waterski Racing Championships in Spain in September.