Steven Jackson

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Steven Jackson

Power 100 rank: 85
Sport: NFL/St. Louis Rams—RB
Age: 26
Most recent notable achievement: 2009 NFL Pro Bowl
Earnings: $12 million
Key sponsors: Nike

Why he's on the list: Hidden from the public eye while playing for the lowly Rams, the league's highest-paid running back has posted five consecutive 1,000-yard rushing seasons, and his bruising style looks spectacular in Nike TV spots.