Originally Posted by BobbyOne
Dan, I think that Geneva was played on clay because at that time in the summer clay was the dominant surface in Continental Europe.
But Geneva had indoor venues, and they would cost less for the pros to rent than an outdoor clay stadium.
We cannot assume very much; for example, in 1960 the second Melbourne event was actually indoor on carpet, despite the prevalence of grass in Australia.
I have listed Geneva above with an asterisk, but the final tally still shows Hoad ahead of Rosewall lifetime on clay.