US star Mikaela Shiffrin, the most successful World Cup skier in history, cemented her Olympic legacy on Wednesday when she won the women's slalom, her third title in her fourth Winter Games.And Shiffrin proved that again on Wednesday by becoming just the second woman to win two Olympic slalom titles,

Regan Dewhirst travels the world as the physical therapist to alpine ski racing star Mikaela Shiffrin, who is competing at the Winter Olympics following her recovery from a major injury