10. Samuel Eto'o
2013 income: $16.4 million
Salary: $13.4 million
Endorsements: $3 million
Eto'o has been Cameroon's rock since he was 16.
Putting in his first appearance in 1997, Eto'o went on to become the most prolific player and scorer in the Indomitable Lions' history. He's played for his national team 112 times, scored 55 goals and appeared in three World Cups.In the last decade, however, he's belonged to the world. He scored 108 goals during his time with Barcelona from 2004-09 and pushed Barca to multiple La Liga and UEFA Champions League titles during his tenure. When he was transfered to Inter Milan in 2009, he just kept going: Scoring 33 goals in three seasons and helping Inter to a Serie A and UEFA Champions League title in his first year. He made more than $20 million a year in Russia afterward before resurfacing in Chelsea this past season. Despite scoring 9 goals for the Blues, he turned up on a list of players being released -- along with England mainstays Ashley Cole and Frank Lampard. Still, there's a chance he could be re-signed and, at 34, even nagging injuries haven't taken the life out of his game.