Floyd Mayweather Jr. is the most richest sports person in the world. The is the sports person for boxing.
A paid athlete is consider a professional athlete.
Kimi Raikkonen at Ferrari
Mahendra Singh Dhoni
Tiger Woods. The top 50 are here: http://sportsillustrated.cnn.com/more/specials/fortunate50/
depends on what sport and the ability of the player, a proffessional footballer gets paid from 30,000 to 200,000 per game
David Beckham La galaxy £24.1 million
LeBron James is the highest paid though he is not the richest, there are several richer sports men who earned their money through competition winnings as apose to weekly salary
Bolt
A person who is paid for their involvement in sport. This would include obviously the players, but also many officials and commentators, the groundskeepers, and several persons crucial to the running of any sports fixture.
YES! They do
football