Keely Hodgkinson is set to contest her first race since being crowned Olympic 800m champion 12 months ago, while fellow Briton Georgia Hunter Bell targets her third Diamond League win of the season in Silesia, Poland.
England’s Hodgkinson, who suffered setbacks during her recovery from a hamstring injury sustained in February, will make her long-awaited return to competitive action just four weeks before the start of the World Championships in Tokyo.
The 23-year-old, a two-time world silver medallist, will race over 800m in Silesia – an event that is not part of the Diamond League programme at this meeting.
Training partner Hunter Bell contests the women’s 1500m as the Olympic bronze medallist weighs up whether to target that event in Tokyo, or join Hodgkinson in the 800m.
Following 800m wins at the Diamond League events in Stockholm and London, Hunter Bell will test herself against Ethiopia’s Gudaf Tsegay and Diribe Welteji in a high-quality line-up.
Hodgkinson and Hunter Bell, who are both coached by Trevor Painter and Jenny Meadows, are set to go head-to-head in the 800m at the Lausanne Diamond League next Wednesday.
Also in Silesia, Dina Asher-Smith takes on world champion Sha’Carri Richardson in the women’s 100m, while Daryll Neita and Amy Hunt are up against two-time world champion Shericka Jackson in the 200m.
World indoor champion Amber Anning is in the women’s 400m, and the men’s 1500m features Neil Gourley.
Armand Duplantis – who this week broke the men’s pole vault world record for the 13th time – Faith Kipyegon, Noah Lyles and Femke Bol are among the global stars in action.
Watch the Silesia Diamond League action on BBC Two, BBC iPlayer and the BBC Sport website and app from 15:00-17:00 BST on Friday.
As Hodgkinson’s race is not part of the Diamond League programme, it will take place before TV coverage begins – but replays will be available on BBC platforms.