2013-14 team: Miami Heat
Years in the league: 10
2013-14 salary: $19,067,500
2012-13 stats: 26.8 PPG, 8.0 RPG, 7.3 APG, 1.7 SPG, 0.9 BPG
Comparable players (and their salaries): Kobe Bryant ($30,453,000), Carmelo Anthony ($21,490,000)

While it may seem weird that someone who makes over $19 million a season could be underpaid, LeBron James is not in the same stratosphere as any other basketball player alive. The question should really become: how much is LeBron James worth to his team? Obviously, given the current salary structure, he is a clear-cut "max" player. But let's suppose there was no limit on the value of player contracts and no salary cap. What would he be worth? $50 million a season? $75 million? Not only do you get the greatest player in the league and instantly morph your team into a title contender, but you also get someone who instantly makes your team's jerseys the No. 1 seller around the world and increases the global visibility of your franchise.