Many commentators and players regard Federer as the greatest tennis player of all time. Federer turned professional in 1998 and has been ranked inside the top 10 since October 2002. Federer holds several records of the Open Era: holding the world No. 1 position for 302 weeks (including 237 consecutive weeks); winning 17 Grand Slam singles titles; reaching each Grand Slam final at least five times (an all-time record); and reaching the Wimbledon final ten times. He is among the seven men (and among the four in Open Era) to capture a career Grand Slam. This item comes with a Certificate of Authenticity.