Roger Federer is the oldest player in the world to be ranked world number 1 in ATP history, he accomplished this feat at 36 years and 320 days.
Roger Federer won 24 consecutive matches against top-10 players. between 2003 and 2005 with wins against opponents like Andre Agassi, Andy Roddick, Lleyton Hewitt, Marat Safin, Carlos Moya, and Juan Carlos Ferrero.
Roger Federer is the only male player to be seeded No. 1 for 18 consecutive Grand Slam tournaments from 2004 French Open to 2008 Wimbledon.