Karsten Warholm is back in Oslo, new 100m world leader, women’s teen mile record

The Oslo Diamond League produced Norwegian Karsten Warholm‘s comeback, a new world’s fastest woman in 2023, the fastest female teenage mile ever and a new second-fastest American man in 1500m history.

Start with the Olympic champion Warholm, who ran the fourth-fastest 400m hurdles in history (46.52 seconds) in his first time racing the event in nine months. Warholm, the world record holder at 45.94, was seventh at last July’s world championships after tearing a hamstring in a race a month and a half earlier.

Warholm instantly becomes the favorite for this August’s worlds in Budapest. Olympic and world silver medalist Rai Benjamin, the second-fastest man in history, has reportedly dealt with a quad injury since running 47.74 and 47.78 in April and May. Reigning world champion Alison dos Santos of Brazil, the third-fastest man in history, is uncertain to compete this season after February knee surgery.

“Today shows in the right circumstances, I can really attack the world record, maybe even this year,” Warholm said, according to meet organizers.

Full Oslo results are here. The Diamond League next stops in Lausanne, Switzerland on June 30, live on Peacock.

Also Thursday, Ivorian Marie-Josee Ta Lou won the 100m in 10.75, displacing American Sha’Carri Richardson as world’s fastest woman this year by one hundredth. Ta Lou, 34, has been chasing the top Jamaicans for nearly a decade. She was fourth at the last two Olympics and owns world championships silver and bronze medals.

The women’s 100m picture for August’s worlds is a bit unclear given neither world champion Shelly-Ann Fraser-Pryce nor Olympic champion Elaine Thompson-Herah has raced a 100m yet this year.

The 17-year-old Ethiopian Birke Haylom became the fastest teenage