They're one of the hottest couples out there. But how well do they know each other as an athlete? We decide to put their knowledge to the test. Find out how well NHL player PK Subban and olympian Lindsey Vonn really know each other. » Subscribe to USA TODAY Sports: https://bit.ly/2L0ktE1 » USA TODAY delivers current local and national news, sports, entertainment,  finance, technology, and more through award-winning journalism, photos, videos and VR. #LindseyVonn #engaged #PKSubban