The 2025 Diamond League meet in Monaco is shaping up to be one of the most thrilling stops of the season, with Olympic rematches, season event debuts, and world-class talent across the board.

The 2025 Diamond League continues in Oslo with a stacked lineup of Olympic champions, world medalists, and thrilling rematches. From the much-anticipated 300m hurdles showdown to Julien Alfred’s 100m season debut and Emmanuel Wanyonyi’s return in the 800m, here are the top storylines to watch—plus a quick turnaround to Stockholm that sets up even more drama.

Emmanuel Wanyonyi, who recently won the Grand Slam Track Kingston Slam, is slated to compete in the 800m at the Stockholm Diamond League meeting on June 15.