With compatriot Lucienne Tschaggeny she had a bye in the first round of the 1920 women's doubles event and lost in the quarterfinal to Winifred Beamish and Edith Holman.

At the next Olympics in 1924 she teamed up with Marie Storms and lost in the second round to Phyllis Covell and Kitty McKane after a bye in the first.

[2] De Borman competed in all three events (singles, doubles, mixed) at the 1921 Wimbledon Championships.

[3] In 1912 she won the mixed doubles title at the World Hard Court Championships, played at the Stade Français in Paris.

With her partner Max Decugis she defeated the German pair Mieken Rieck and Heinrich Kleinschroth in the final in straight sets.