Also in Brussels, Charlie Dobson of Great Britain was third in the 400m male in 44.81 seconds, behind Americans Jacory Patterson (44.05) and Vernon Norwood (44.62).
Like Cauderny, British teammate Laura Muir also spoke optimistic about her ambitions in the world championship after placing room in the 1500m female.
After supporting a disorderly start of the injuries, the Olympic and World Muir medalist registered a better three -minute season 57.63 seconds in a race won by Nikki Hiltz American in 3: 55.94.
“I am in a good place. Taking into account that it is the first time I ran in a race of that caliber for more than a year, to go out and run [that time] It’s great, “said Muir, 32.
“With a little more training, I am excited to see what I can do. I think there was another second or two in the legs today … and running that time you are not too far [from the medals]. “
In the 1500 men’s meters, Great Britain’s world champion, Jake Wightman, Ninth was 32.95, a place ahead of Neil Gourley (3: 33.21), as the Dutchman Niels Laros won in 3: 30.58.
Rising Star Innes Fitzgerald, 19, was 15 in 14: 48.84 in a female 5,000m that had Agnes Jebet Ngetich of Kenya chasing the world record that finally vanished to win in 14: 24.99.