Nadal first signed with Nike at the age of 13, where he earned just $500,000 over five years. In 2008, he signed a 10-year contract extension worth over $10 million per year. In 2018, another five-year extension was signed for $10 million per year, according to Yahoo Sports.

Roger Federer paid tribute to his retiring rival Rafa Nadal on Tuesday, telling the Spaniard he challenged him like no other player and that he had made the tennis world proud during a glittering career lasting over two decades.