1. Federer
2. Sampras
3. Emerson
4. Borg
5. Lendl
6. Tilden
7. Agassi
8. Laver
9. Conners
10. Perry
All better than Nadal. He'll lose before the finals in Wimbledon this year.
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Americans are benevolently ignorant about Canada, while Canadians are malevolently well informed about Americans.