Well, that's it folks.
The greatest Olympian of all-time, American Michael Phelps, has taken his last few laps in an Olympic pool. He finished his career with 22 medals, 18 of which are golden.
This, after he swam the butterfly portion of the 4x100 medley relay won by the United States on the final day of swimming at the London Games.
Now, the real discussion begins. Where is Phelps' place in the sports history, not just in terms of the Olympics, but up amongst the greats, Ruth, Ali and Jordan?
Is Phelps the greatest American athlete that's ever lived?
Two-time gold medalist, Mel Stewart, weighs in on the subject.
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