Arguably the greatest tennis player ever, the Federer era may be nearing its end. He has been passed by both Rafael Nadal and Novak Djokovic in the rankings. Federer still commands the most impressive endorsement portfolio in all of sports with 10 major deals including Nike, Credit Suisse, Rolex and Wilson. He was the only one of Gillette's original 3 "Champions" to have his deal renewed this year as the brand dropped Tiger Woods and Thierry Henry.
(AP Photo/Christophe Ena) More From Forbes: The Most Expensive Celebrity Tweets Celebrity Goods Go Virtual 50 Names You Need To Know The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.