Four days after American teen 800m phenom Cooper Lutkenhaus pulled off a huge upset at his Diamond League debut in Stockholm, taking the win over Canadian record holder Marco Arop, the pair are set to meet again in Oslo. While Stockholm was Arop’s race to lose, Oslo is wide open, featuring a stacked field that includes world and Olympic champion Emmanuel Wanyonyi.

Will Lutkenhaus replicate his winning result, can Arop get redemption or will Wanyonyi stop the clock first?

The Oslo Diamond League, the sixth meeting of the 2026 circuit, is set for Wednesday. Along with Lutkenhaus, Arop and Wanyonyi, the lineup will include Spain’s Mohamed Attaoui, Australia’s Peter Bol, Great Britain’s Max Burgin, Belgium’s Eliott Crestan and France’s Gabriel Tual.

Lutkenhaus on an upward trajectory

In March, Lutkenhaus made history, becoming the youngest individual world champion in track and field history at the World Indoor Championships in Poland. He also owns the world U18 record and North American U18 and U20 record of 1:42.27, set last August. The young American opened his outdoor season last month with a rare 1,500m at L.A. track festival, running 3:45.10; Stockholm marked his 2026 outdoor 800m debut.

Arop is just warming up

Stockholm marked Arop’s first race since the 2025 World Athletics Championships in Tokyo in September. The Canadian, who appeared to be comfortably leading the Stockholm race until he was overtaken by the American in the closing metres, taking second in 1:43.11 to Lutkenhaus’s winning 1:42.70, will undoubtedly be gunning for a redemption run in Oslo.

Arop is the reigning Olympic silver medallist, 2023 world champion and reigning world bronze medallist. His personal best of 1:41.20, the North American record, ranks him fourth on the global all-time list.

Marco Arop beaten by 17-year-old rising star at Stockholm Diamond League

Wanyonyi has competed twice so far in 2026, opening his season in April with a 3:34.11 1,500m and running 1:43.56 for second in the 800m at last week’s Rabat Diamond League.

Gout Gout vs. Tebogo

Speaking of teen phenoms, Oslo will also mark the first time we’ll see Australia’s U20 world record holder Gout Gout and Botswana’s Olympic champion Letsile Tebogo on the same 200m starting line. The event will mark Gout’s Diamond League debut, while it will be Tebogo’s 15th race on the exclusive circuit.

Melissa Jefferson-WoodenAmerican Melissa Jefferson-Wooden storms to the win over Canada’s Sade McCreath in the women’s 100m at the 2025 World Athletics Championships in Tokyo. Photo: Nick Iwanyshyn
Sadé McCreath to double back

Canada’s Sadé McCreath will be returning to the big stages on Wednesday in Oslo for her second Diamond League appearance. The Ajax, Ont., native, who owns a 100m PB of 10.95 and a season’s best of 11.06, is slated to take on a stacked field that includes Great Britain’s Amy Hunt and Dina Asher-Smith, New Zealand’s Zoe Hobbs and Saint Lucia’s Julien Alfred. McCreath made her Diamond League debut on Saturday in Stockholm, taking seventh in the 100m in 11.29 seconds.

Sarah Mitton, who took third in the women’s shot put in Stockholm, will also be competing again in Oslo.

The “Dream Mile”

One of the premier events of the evening, the men’s mile, dubbed the “Dream Mile,” will feature a very deep field, including Australia’s world U20 mile record holder Cameron Myers, American stars Yared Nuguse and Hobbs Kessler, France’s Azeddine Habz, Norway’s Narve Gilje Nordås and Great Britain’s Jake Wightman.