Bill Tilden was in Australia and New Zealand in the Southern Hemisphere summer of 1920/1921. He won the New Zealand Championships. Why didn't he compete in the Australasian Championships at that time? Does anyone know why? It's clear from this: http://tennishistory.com.au/2012/01/top-australian-men-in-the-1920s/ that Tilden was also there to play Davis Cup against Australasia. He played an exhibition in Mid-January in 1921. Again, he was there around the time of the Australasian Championships.