Originally Posted by NYCtennisfan
Win 10 or more titles in back-to-back years.
Nastase 1972 (12)-1973 (14)
Connors 1973 (11)-1974 (14)
Ivan Lendl is the only other player to have ever won 10 or more titles in two different years.
Lendl 1982 (15)
Lendl 1985 (11)
Federer won 11 last year and has already won 10 titles this year. He is doing things that only players in a long ago era in men's tennis did. Truly incredible.
Indeed and 60% of them are at the master series level or better.