Question: who is the richest sport man in the world 2017?
Answer: Cristiano Ronaldo, $93 million (Soccer, Portugal) ... 
LeBron James, $86.2 million (Basketball, U.S.)
Lionel Messi, $80 million (Soccer, Argentina)
Roger Federer, $64 million (Tennis, Switzerland)
Kevin Durant, $60.6 million (Basketball, U.S.)
Andrew Luck, $50 million (Football, U.S.)