Fraser-Pryce was set to compete on the European circuit for the first time since 2023 but pulled out of the race after feeling some discomfort during her warm-up.
Tuesday’s race would’ve been Fraser-Pryce’s last race before the Paris Olympics.
She has competed in only four 100m races this season with three of those coming at the Jamaican National Championships from June 27-30 where she ran 10.94 for third in the final to book her spot at the Olympics.
Williams turned back the challenge of Dutchwoman Lisanne de Witte and Switzerland’s Annina Fahr to win in 50.58, her second fastest time this season, trailing behind her 50.56 to finish second at Jamaica’s National Championships in June.
De Witte and Fahr’s times in second and third were 51.99 and 52.08, respectively.
Richards, the 2017 World Championship bronze medallist and two-time Commonwealth Champion, all in the 200m, won the half-lap event on Tuesday in 20.19 ahead of the Zimbabwean pair Makanakaishe Charamba (20.42) and Tapiwanashe Makarawu (20.48).
The 30-year-old Trinidadian will also compete in the 400m in Paris. He won gold in the distance at the World Indoor Championships in 2022.
Another Jamaican Olympian, Lanae-Tava Thomas, was narrowly beaten by the Ivory Coast’s Jessika Gbai in the 200m.
Gbai’s winning time of 22.57 just beat out Thomas’s 22.60 while Switzerland’s Mujinga Kambundji was just behind in third in 22.61.
Kemba Nelson ran 11.21 to finish third overall in the women’s 100m behind New Zealand’s Zoe Hobbs (11.17) and Kambundji (11.20).
