Are Danie Visser and Bob Bryan both professional tennis players?
Danie Visser Danie Visser (born 26 July 1961) is a former professional tennis player from South Africa. A doubles specialist, he won 3 Grand Slam men's doubles titles (2 Australian Open and 1 US Open). Visser reached the World No. 1 doubles ranking in January 1990.
Jean Danilovich Jean Danilovich (born July 29, 1946) was an American amateur tennis player.