In the penultimate Diamond League race before the Tokyo Olympics begin later this month, four events saw world-leading times and one produced a meet record in Monaco.
Karsten Warholm set the only meet record in the opening race of the meet, the men’s 400m hurdles.
The Norwegian was racing just eight days after breaking the world record. He ran 46.70 seconds in Oslo to lower the longest-standing men’s track world record. American Kevin Young had last set the record when he ran 46.78 for Olympic gold in 1992.
With the potential to now lower his own world record, Warholm won the Monaco race in 47.