Paris - Yohan Blake, Tyson Gay, Justin Gatlin and Asafa Powell are all set to take part in the 100m at the Lausanne Diamond League meeting scheduled for July 4, organisers revealed on Tuesday.
Blake, the reigning world champion over the distance, ran the second-fastest 100m in history in Lausanne last year, in a time of 9.69.
However, organisers say that he is not absolutely certain to feature in the eighth Diamond League meet of the season as he recovers fitness after a minor injury.
Olympic champion Usain Bolt will not be there, but will feature at the Paris meet just two days later.
Organisers also confirmed that Olympic champion and triple world champion Allyson Felix will come up against Carmelita Jeter in the women's 200m.