NadalAgassi, when you spell it out that way as an overall clay courter I would rank them : Sabatini, Martinez, Hingis, and Mandlikova.
But if you asked me to rank them on their French Open records it would go like this : Mandlikova, Hingis, Sabatini, Martinez.
If all of these players were in their prime and the top seeds at the French I would likely seed them Hingis, Mandlikova, Sabatini, and Martinez.
If I had to rank Hana's records at each of the slams based on # of quality finishes and consistency it would go like this: US Open, French Open, Australian Open, and Wimbledon
Maybe this exercise is the best proof to support BTurner's suggestion that Hana was not a great clay courter but capable of great things on clay?
Now if someone could make sense of Hana's Wimbledon record I would appreciate that.