Caster Semenya is expected to continue her global middle-distance dominance at the Paris Diamond League meeting this weekend.
She will spearhead a contingent of six South African athletes at the Charléty Stadium on Saturday night.
The world and Olympic champion has been the dominant figure over the 800-metre distance for close to three years.
She will be in good company in the French capital, however, where she lines up against chief antagonists Francine Niyonsaba of Burundi and American ace Ajee Wilson.
It is one of the fastest two-lap fields assembled in recent years, with Niyonsaba, Semenya and Wilson all boasting times under 1:56.00.
Three more athletes in the race, including Olympic bronze medallist Margaret Wambui of Kenya have clocked personal bests under 1:57.00.
The speedster will be in the curtain closing act of the night when he settles into the blocks against two of the fastest men this season in the men’s 100m race.
Buoyed by his first sub-10 second time of the year, which he clocked at the IAAF World Challenge meeting in Madrid last week, Simbine will be looking to prove a point.
He will have the second and third fastest men this year – Americans Mike Rodgers (9.89) and Ronnie Baker (9.90) – as main contenders.
Henricho Bruintjies and Thando Roto
Both sub-10 second men will be in action in the 100m B-race where they will hope to prove they deserved to be in the main contest.
Commonwealth Games silver medallist Bruintjies has been a model of consistency this year, while Roto has eased his way back onto the track after recovering from injury, boasting a season’s best of 10.17.
The South African 110m hurdles record holder has not come close to the personal best mark of 13.11 he set last year.
He will hope to progress beyond the heats and earn a spot in the final, however, and he could rattle the season’s best of 13.32 he clocked at the Gold Coast Commonwealth Games in April.
Emerging as one of the rising stars of South African sprinting, Adams will feature in the men’s 200m event, which is in the main programme but is not a Diamond League race.
The half-lap specialist will line up against French favourite and former World Championships bronze medallist Christophe Lemaitre.