Great Britain's Keely Hodgkinson set an 800m world lead in her first race since winning gold at the Paris Olympics.
The 23-year-old returned to action in Silesia for the first time in 376 days in emphatic fashion.
Hodgkinson, whose return from the hamstring injury she sustained in February has been delayed by setbacks, set a new meeting record of 1:54.74 to finish well clear of Kenya's Lilian Odira and Botswana's Oratile Nowe.
The Briton's time was her second-fastest ever - and the fastest by any runner since her victory in the 800m final at Paris 2024.
"That was so much fun," she said after victory in a race which took place before Saturday's main Diamond League programme.
"It's amazing, I really wanted to have this opportunity. I don't have much time to get ready for the Worlds, so I have to put something down."
The World Championships in Tokyo get under way on 13 September and run until 21 September.
Related News
19 Apr, 2025
Everton 0-2 Man City: Nico O'Reilly and . . .
25 Apr, 2025
CEO Dehring hails Barbados’ Dominance in . . .
31 May, 2025
Pakistan beat Bangladesh by 57 runs to l . . .
28 Jul, 2025
Trump plays golf in Scotland as proteste . . .
06 Jun, 2025
Ex-Cinespace Chicago Film Studios boss A . . .
06 Mar, 2025
Gymnast Jordan Chiles talks new memoir, . . .
30 Jun, 2025
Good news for PUBG lovers in India as PU . . .
25 Apr, 2025
Flint-area high school sports roundup: G . . .