Rising American Mikaela Shiffrin won her first World Cup race here on Thursday, clocking the fastest aggregate time over two legs of a night slalom. The 17-year-old Shiffrin edged home 00.29 seconds ahead of Sweden\'s Frida Hansdotter, who was fastest on the first leg, with World Cup leader Tina Maze of Slovenia settling for third place 00.52secs back.