Nastase, Connors, and Federer have all won 10+ titles in consecutive years:
Nastase 1972 (12)-1973 (14)
Connors 1973 (11)-1974 (14)
Federer 2004 (11)-2005 (11)
Connors was the closest to getting double digits in 3 straight years with 11, 14, and 9 in a 3 year stretch from '73 to '75; JMac had 10, 8, and 9 from '83 to '85; Lendl had 8, 9, and 11 from 85-'87.
Federer with one more title this year will accomplish this amazing feat. One thing to note: Nastase and Connors won their titles when the tour was split into two i.e. the ATP Tour and the WCT Tour with all the top players split between the two tours. The tournaments they won, by and large, had weakened fields and the depth itself was not close to what it is today. Then there is the fact that the TMS fields make winning 10+ titles in a year that much tougher.
BTW, 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)
Uhhhhhh, I believe this should read "...the only other player to have won 10 or more titles in two non-consecutive years"
Haha, just being a bitchy correct anything know it all type.
Anyway, interesting stat, NYC.