PARIS (AP) Former world champion Tyson Gay ran 10.04 seconds in pouring rain to win the 100 meters at the Montreuil meeting on Monday.
The American sprinter made his return from a one-year doping ban last week, finishing second behind Justin Gatlin at the Athletissima meeting in Switzerland.
Gay crossed the finish line 0.12 clear of 2008 Olympic runner-up Richard Thompson.
Also, Michelle-Lee Ahye overcame a poor start in the women's 100 to beat Carrie Russell in 11.32 and Olympic champion Sanya Richards-Ross pulled away in the final straight to win the 400 in 51.12.
Hansle Parchment, who set a year-leading 12.94 in the 110 hurdles last week in Paris, edged Orlando Ortega in 13.33.