Not "the most shafted" fighter, but i think Max Schmeling got a raw deal. He deserved a crack at the title and was getting one, but Louis' managers talked Braddock out of it by offering him part of Louis' future purses. Schmeling did get his shot later, but Braddock would've been easier to beat and he may well have gone down as the first two-time world champion and Schmeling-Louis II would've been equally big if not bigger, to "get the title back from the nazi's".
Pernell Whitaker was shafted against Ramirez, Chavez and one could argue against De La Hoya. If it wasn't for these shaftings the guy would have been 43-0.
joel casamayor....now before people scream CRUZ!!! CRUZZZZ.......!!!! he was on the end of some bad decisions. he could easily be unbeaten to this day. acelino got a ruling for knokcdown which was not it was a slip, casa outjabbed and out slciked him