Warholm beats Benjamin in 400m hurdles semi in final teaser
![Warholm beats Benjamin in 400m hurdles semi in final teaser](https://ktvz.b-cdn.net/2021/08/oly20_atm400h_2584_warholmbenjaminsemi_hl_210801-1440x810.jpg)
NBC Olympics
In their first matchup since the 2019 World Championships final, world record-holder Karsten Warholm of Norway – the winner of that title – and American Rai Benjamin go 1-2 in their semi to advance to the Tokyo final.