Karsten Warholm Has Great Reaction to Setting 400m Hurdles World Record

Even world-record-holding athletes can be surprised by their personal feats. Norway's Karsten Warholm crushed his own world record to win the men's 400m hurdles final in 45.94 seconds on Monday night. And his reaction was priceless. On July 1, Warholm broke American Kevin Young's 29-year-old world record of 46.78 seconds...