20 (Lleyton Hewitt)
Martina Hingis was 16 years, 6 months old when she gained the #1 ranking in women's tennis in March, 1997.
Novak Djokovic is the number one male player in the world. 49-1 this year!
Andy mURRAY,NOW..
Andy Murray
I think either Boris Becker or Layton Hewitt. I think they were 17 years old.
Lleyton Hewitt, an Australian tennis player, is famous for ranking World No. 1 at age 20, making him the youngest male tennis player to ever rank World No. 1. He has competed in various tournaments as well.
Novak Djokovic
Best Male Tennis Player ESPY Award was created in 1993.
As of December 2010, Rafael Nadal is the number 1 ranked male tennis player. As of January 2011, Caroline Wozniacki is the number 1 ranked female tennis player.
Roger Federer ended 2009 as world number 1
Roger Federer
It is one and only "ROGER FEDERER"