Assume the 8 greatest players of all-time faced off in a tournament similar to the current Year-End Championships (Round Robin stage consisting of 2 groups of 4, then semis and final). As usual, the winner of Group A would face the runner-up in Group B, and vice-versa. In the group stage, everyone would play one match on each of the main tennis surfaces (traditional/fast grass, red clay and modern hardcourt). The semi-final would be played on carpet. The final would be played on the old wood surface. Let's assume for simplicity that all these players used modern equipment and had modern training/diet etc. so could compete on a level playing field. All matches are best of 5 sets. Here are the round-robin stage groups: Group A Federer Sampras Borg Rosewall Group B Laver Gonzales Nadal Tilden And here are the matches to be played: Group A Grass Federer vs. Rosewall Sampras vs. Borg Clay Federer vs. Borg Sampras vs. Rosewall Hard Federer vs. Sampras Borg vs. Rosewall Group B Grass Laver vs. Tilden Gonzales vs. Nadal Clay Laver vs. Nadal Gonzales vs. Tilden Hard Laver vs. Gonzales Nadal vs. Tilden What would the results be? Who would emerge victorious from this tournament of giants???