Karsten Warholm, of Norway, reacts after winning the men’s 400-meter hurdles final at the 2020 Summer Olympics, Tuesday, Aug. 3, 2021, in Tokyo. (AP Photo/Petr David Josek) ...

TOKYO -- Karsten Warholm of Norway obliterated his own world record in the Olympic 400-meter hurdles Tuesday, finishing in 45.94 seconds to break the old mark by .76.

Norway’s Karsten Warholm ripped his shirt in celebration as he broke his own world record in the 400-meter hurdles on Tuesday at the Tokyo Olympics.

Karsten Warholm crushed his own 300-meter hurdles world best time in front of a home crowd in Oslo, Norway on Wednesday, clocking 32.67 seconds.. Warholm set the previous mark of 33.05 seconds in ...

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Karsten Warholm, the Norwegian reigning world champion and gold medalist in the 400-meter hurdles has a budding rivalry with the American Rai Benjamin. It’s just what track and field needs.

Karsten Warholm of Norway returned to the top of the global medal podium, racing to his third victory in the 400-metres hurdles at the World Athletics Championships on Wednesday.

Watch as Norway's Karsten Warholm wins the men's 400m hurdles final in 46.98 seconds at the European Athletics Championships in Rome.

Norway's Karsten Warholm produced a fighting performance to regain his 400m hurdles title but teammate Jakob Ingebrigtsen once again fell short in the 1500m on a pulsating night at the world ...

Norway’s Karsten Warholm from Norway, Brazil’s Alison Dos Santos and Raj Benjamin of the U.S. in action during the men’s 300m hurdles Fredrik Varfjell/NTB via REUTERS ...