As the title said. Who has been their country #1 for the longest time? Someone from a small country who played for a long time, surely, but who?
Federer became Swiss #1 15/1-2001 and will thus achieve 13 years in January, but I do not think this is a record. Can't think of anyone better off my head, though. Lendl blew his chance by switching nationalities. Any ideas?
Sargsian: 13/7-92 to 14/8-94 and 10/7-95 to 14/8-06. In total just over 13 years. Quite a bit behind Delgado, he'll be passed by Federer soon.
Nieminen: 30/7-01 to date. He'll have to keep at it for some years more to be a contender.
Filippini: Not a candidate. Back-and-forth in 1988, overtaken 00. Maximum just over 12 years.
It may be a player from a really small country whom we have never heard of and only plays a few futures/challengers per season. Players that we know typically have achieved a high ranking, and such players typically retire before age 35. Very low ranked players may continue to play small tournaments up to much higher age.