By the numbers: The world's richest tennis players By: CNBC.com News August 31, 2015 at 18:04 PM EDT The tennis players at this year's U.S. Open 2015 will play for a $3.3 million prize, but according to one ranking they probably don't need the money. Read More >> Related Stocks: Adidas Ag ADR America Movil S.A.B. DE C.V. ADR Nike Inc PG&E Corp Telefonica S.A. ADR Under Armour