Image source, Getty Images
Armand Duplantis, Julien Alfred and Matthew Hudson-Smith are among the stars competing at the Eugene Diamond League
The 2025 Eugene Diamond League meeting boasts one of the best fields this year with 17 individual champions from the Paris Olympics and 14 world record holders in action.
Five events feature all three medallists from the Paris Olympics, including the women's 100m, which sees St Lucia's Olympic champion Julien Alfred take on American duo Sha'Carri Richardson and Melissa Jefferson-Wooden.
Among the world record holders in Oregon are Sweden's Armand Duplantis, who set a new high of 6.28m in the men's pole vault in Stockholm last month, and Kenya's three-time Olympic 1500m champion Faith Kipyegon.
You can watch all the Diamond League, also known as Prefontaine Classic, action unfold on BBC iPlayer, the BBC Sport website and the BBC Sport app from 21:00-23:00 BST.
Which British stars are competing?
Image source, Getty Images
Matthew Hudson-Smith won individual and relay medals at the Paris Olympics
In the men's 100m, Britain's 60m world indoor champion Jeremiah Azu and British record holder Zharnel Hughes go up against Olympic silver medallist Kishane Thompson of Jamaica, who with 9.75 seconds has the fastest time in the world this year, and American Trayvon Bromell.
Great Britain's Matthew Hudson-Smith, who won silver in France last summer, and Charlie Dobson take on Olympic champion Quincy Hall and Olympic bronze medallist Muzala Samukonga in the men's 400m.
Britain's Olympic bronze medallist Georgia Hunter-Bell faces the challenge of Kenyan great Faith Kipyegon and Australian star Jessica Hull in the women's 1500m.
GB's world indoor champion Amber Anning is up against two-time Olympic 400m hurdles champion Sydney McLaughlin-Levrone in the women's flat 400m.
Other British athletes in action include Dina Asher-Smith, Neil Gourley and Jake Wightman, but Olympic 800m champion Keely Hodgkinson, whose return from a hamstring injury was delayed by a setback in April, and Josh Kerr are not competing.
Hunter-Bell wins Diamond League women's 800m
What time are the key events in Eugene?
21:12 BST - men's 100m featuring Jeremiah Azu and Zharnel Hughes
21:43 BST - men's 400m featuring Matt Hudson-Smith and Charlie Dobson
21:51 BST - women's 400m featuring Sydney McLaughlin-Levrone and Amber Anning
21:58 BST - women's 1500m featuring Faith Kipyegon and Georgia Hunter-Bell
22:25 BST - men's 200m featuring Letsile Tebogo and Kenny Bednarek
22:34 BST - women's 800m featuring Mary Moraa and Athing Mu-Nikolayev
22:44 BST - women's 100m featuring Julien Alfred, Sha'Carri Richardson, Melissa Jefferson-Wooden and Dina Asher-Smith
22:50 BST - Bowerman Mile featuring Cole Hocker, Neil Gourley and Jake Wightman
What's coming up this Diamond League season?
After stops in Eugene and Monaco, the series visits the UK for the sold-out London Diamond League on 19 July.
Injury permitting, Hodgkinson is expected to compete at the event where last summer she improved her British record to one minute 54.61 seconds.
London is also set to host the latest chapter in the 1500m rivalry between world champion Josh Kerr and Norwegian rival Jakob Ingebrigtsen.
Olympic and world 100m champion Noah Lyles, world 400m hurdles champion Femke Bol and British pole vaulter Molly Caudery are also on the entry lists, as the world's top athletes build towards their shot at World Championship glory in Japan in September.
What is on the line in the Diamond League?
Athletes compete for points in 32 disciplines in a bid to qualify for the Diamond League Finals in Zurich in August.
That takes place just over a fortnight before the start of the World Athletics Championships in Tokyo.
All Diamond League events will be shown on the BBC, which has agreed a deal to broadcast the competition for the next five years.
The Diamond League has increased its prize money to the highest level in its history, with a total prize pot of $9.24m (£6.95m) on offer across the series.
That includes $500,000 (£375,000) at each of the 14 series meetings, and $2.2m (£1.7m) at the Diamond League final.
How does the Diamond League work?
Athletes will compete for points at the 14 regular series meetings which started in April and run through to August.
Points are awarded on a scale from eight for first place to one for eighth place.
After the 14th meeting in Brussels, the top six ranked athletes in the field events, the top eight in track events from 100m up to 800m, and the top 10 in the distances from 1500m upwards qualify for the final.
The two-day finals are a winner-takes-all competition to be crowned Diamond League champion in each event.
'He's got it!' - Duplants sets new pole vault world record
Diamond League calendar 2025
26 April - Xiamen, China
03 May - Keqiao, China
16 May - Doha, Qatar
25 May - Rabat, Morocco
06 June - Rome, Italy
12 June - Oslo, Norway
15 June - Stockholm, Sweden
20 June - Paris, France
05 July - Eugene, USA
11 July - Monaco
19 July - London, England
16 August - Silesia, Poland
20 August - Lausanne, Switzerland
22 August - Brussels, Belgium
27-28 August - Zurich, Switzerland