Appearance Fees: Expanding Inequality in Today's Game - Last Word On Tennis
Roger Federer's appearance fees at ATP events revealed
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Opinion: If Novak Djokovic and PTPA really want to address inequality, appearance fees have to end - Eurosport
Rafael Nadal skipping Acapulco this year due to appearance fee disagreement - Reports
Andy Murray: I would not compete in Saudi Arabia
Forbes on Twitter: "Novak Djokovic, No. 2 on the list, earned $44.6 million, 72% of it from endorsements and appearance fees https://t.co/I8jNau8C45" / Twitter
Windsor's Olivia Lincer made the most of her first Wimbledon appearance playing as a junior – Hartford Courant
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Roger Federer: First tennis star to top highest-paid athletes list