The Most Successful Athletes Across Sports of the 21st Century

According to data collected by 24/7 Wall St. these 20 athletes, from all sports, sit atop the list of the most successful in the 21st century including Cristiano Ronaldo, LeBron James, and Rafael Nadal.

According to data collected by 24/7 Wall St. these 20 athletes sit atop the list of the most successful in the 21st century.