A vet whose previous UFC experience was a crushing defeat at the hands of Pound for Pound great Georges St Pierre. After a good run through just about every other Welterweight division outside of the UFC (including a losing effort in his title tilt against Bellator's Ben Askren) Hieron will get to step in to replace the injured Koscheck and add a little sizzle to the UFC 151 card. This marks the second time Jake Ellenberger and Hieron have squared off, the first bout being in the IFL and a decision loss for Ellenberger. Coming off a TKO loss to Martin Kampmann at the Ultimate Fighter 15 Finale, Ellenberger will hope to return to his winning ways by avenging an old setback to a stellar opponent. Will Hieron prove he belongs amongst the best in the UFC, or will Ellenberger pick up where he left off on his crusade to once again meet Condit or derail GSP? Tune in to 151 to find out.