greatest of all time

Originally inspired after watching the French Open men's final this year, and the discussion that was going on about its place in the great matches of all time, I embarked on a project to catalogue the "greatest" men's and women's singles finals of all time. Some of the considerations to what...

I would like to start a thread of what we might even mean by "greatest of all time." 1) Do we mean played the best/strongest tennis ever? If so did that level have to last longer then one set? At least a whole match? At least a month? At least a year, 3 years, 10 years etc? Might the...