Norway's Karsten Warholm breaks his own world record, wins gold in 400-meter hurdles at Tokyo Olympics One of the most anticipated races on the program more than lived up to the hype. Second-place finisher Rai Benjamin of the United States finished in 46.17, also bettering the 46.7 record that Warholm set just last month. "Sometimes in training, my coaches keep telling me this could be possible with the perfect race," Warholm said of the prospect of breaking 46 seconds. "But it was hard to imagine it because it's a big barrier, and it's something you don't even dream about." Warholm tore open his jersey when he crossed the line first. He flashed the same mouth-gaping look of amazement as when he announced himself on the world stage with his victory at world championships in 2017.