Battle of the fittest: Who are the fittest athletes in the World?

Professional athletes do their best to stay in shape to boost their performance. However, some do it better than others.

Sports Illustrated   put together a list that ranked the 50 fittest athletes in sports. It rated athletes on speed, strength, agility and endurance. Each category was based on a scale of 0-10, so a perfect score would be 40.

There aren't many surprises near the top of the list.

  Sports Illustrated's 50 Fittest Athletes in Sports

Rank Athlete Sport Speed Strength Agility Endurance Total

1 LeBron James Basketball 10 10 10 10 40
2 Cristiano Ronaldo Soccer 10 8.5 10 10 38.5

3 Usain Bolt Track 10 9 8.5 9 36.5
4 Floyd Mayweather Boxing 9 8 10 9 36
5 Dez Bryant Football 9 9 8.5 8.5 35
6 Calvin Johnson Football 9 9 8.5 8 34.5
7 Serge Ibaka Basketball 7.5 9.5 8.5 8.5 34

8 Adrian Peterson Football 8.5 9 9 7 33.5
9 Jon Jones UFC 7 10 8 8 33
10 Michael Phelps Swimming 9 7 8 9 33
SI.com