Dale Earnhardt Jr.

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Dale Earnhardt Jr.

Power 100 rank: 45
Sport: Nascar driver
Age: 35
Most recent notable achievement: Won 2008 LifeLock 400
Earnings: $26 million
Key sponsors: Amp Energy, Wrangler, Adidas

Why he's on the list: While his performance on the circuit has suffered in recent years, Dale Jr. has dominated the competition in the business realm. He has the most recognizable name in his sport and has brought in $22 million in endorsement money alone.