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With his stunning, second-round KO of 140-pound champ Ricky Hatton on Saturday (pictured), Filipino southpaw Manny Pacquiao became the second boxer in history to secure titles in six weight divisions (flyweight, junior featherweight, featherweight, junior lightweight, lightweight and junior welterweight). The only other to do so: Oscar De La Hoya, who ended his storied career after getting pummeled by Pacquiao last December. Here's a look at some other multi-divisional champs in history.

Photo: Mark Ralston/AFP/Getty Images

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