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Even if you couldn't see their faces from the nosebleed seats, you'd recognize the number on their backs. Michael Jordan flew past his competition so fast he was nothing but "Air" and the No. 23. Jackie Robinson's No. 42 was so synonymous with his game that both the National and American Leagues retired it. Look up into the rafters or up on a fence for a walk through history as pennants and flags flying high bear the most famous jersey numbers in sports. It's no wonder that these top five jersey numbers and their human icons are considered the best of the best.