Michael Phelps might have been the big star thus far in the 2012 London Olympics, but he's just No. 2 when it comes to reach on Twitter.

Yes, as seen on this infographic provided by the social media tracker Kred.com -- which grades athletes on a 1,000-point scale -- LeBron James is the real king of these Olympics. Close behind: Phelps, Hope Solo and an array of other American athletes who prove as engaging outside the competition as they do within it.