[1] Nourney competed in 1929 Wimbledon Championships but was eliminated in the opening round, by Colin Robbins of South Africa.

The German also failed to register a win at the 1930 French Championships, losing to second seed Bill Tilden in the second round, having received a bye in the first.

In the 1931 Wimbledon Championships, Nourney made it into the third round, with wins over Denmark's Helge Plougmann and Dutch player Josef Knottenbelt.

Later that year, Nourney won the men's doubles title at the German Championships, with Walter Dessart as his partner.

Nourney was beaten by David Williams, a local, in the first round of the 1933 Wimbledon Championships but did manage to reach the doubles semi-finals, partnering Gottfried von Cramm.