Who to watch in track and field's Diamond League opener

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Canada's reigning 800-metre world champion Marco Arop and shot put indoor world champ Sarah Mitton will be in action Saturday as the international track and field season ramps up with the Diamond League opener in Xiamen, China.

If you're not familiar, the Diamond League is a series of one-day track and field meets held all over the world from now through September. The track races are typically squeezed into a viewer-friendly two-hour window. Athletes accumulate points (and earn prize money) in any of the 14 regular-season tour stops they choose to compete in. The top point-getters qualify for the season-ending Diamond League Final, which this year will be held in Brussels. Whoever wins the Final is crowned the champion of their event.

Apart from the world championships and the Olympics, the Diamond League is the best place to see the planet's best track and field athletes compete. And the series has some extra juice this year as everyone gears up for the Paris Olympics, where track and field competition begins Aug. 1.

Here's who to watch in the Diamond League opener on Saturday:

Marco Arop in the men's 800m (7:55 a.m. ET)

The 25-year-old from Edmonton has been on the rise since his tough Olympic debut in 2021 in Tokyo, where he flamed out in the semifinals. A diligent student of his craft and an avid puzzle-solver, Arop went back to work and built himself up to a bronze medallist at the 2022 world championships in Oregon before capturing gold at last summer's worlds in Budapest, outmaneuvering Kenyan teenager Emmanuel Wanyonyi in the final. A few weeks later at the