[2] In 1905 the club staged the first Internationale Düsseldorf tournament.
[1] The combined event was sanctioned by the Deutscher Lawn Tennis Bund (f.1902).
[1] The women's event remained a part of the ILTF Circuit under the original name Dusseldorf International.
In 1973 the women's event was branded as the WTA Düsseldorf Open and was part of the 1973 WTA Tour for one edition only, before it returned as an event on the ILTF Independent Tour.
The women's event ended in 1974 and the men's tournament was discontinued in 1977 and replaced at the same location by the Nations Cup.