Apparently an Austrian Championships tournament did take place in Vienna in 1920, from circa 28 June-4 July. I could find only the following details of the two singles finals:
MFI: Count Ludwig von Salm d. Rolf Kinzel [score?]
WFI: Frau Ellissen* d. Frau Weinlinger [score?]
* There were two tennis-playing Ellissen sisters from Austria, Lilly and Margit.
Maybe this tournament was open only to Austrian players, or maybe very few, if any, overseas players took part in it.
Last edited by newmark401; 12-18-2012 at 06:42 AM.