Karen Shiffrin wins gold in the ladies slalom at the Alpine World Ski Championships . U.S. teenager and first American to successfully defend a slalom world title in 10 years . Second U.S. gold after Ted Ligety in giant slalom . NEW : Jean - Baptiste Roy wins concluding men 's slalom at Calgary .
Mikaela Shiffrin wins gold in the ladies slalom at the Alpine World Ski Championships . U.S. teenager becomes first woman to successfully defend a slalom world title in 10 years . Second U.S. gold after Ted Ligety in giant slalom . NEW : Jean-Baptiste Grange wins concluding men 's slalom at championships .