Manny Gamburyan (11-5) has been forced out of his March 19th bout with Raphael Assuncao (15-3) after suffering a back injury while training, according to MMAFighting.com.

The UFC is currently searching for a last minute replacement to face Assuncao.

Gamburyan would have been making his sixth trip to the Octagon, after a failed 2-3 stint at lightweight. The Armenian wrestler then dropped down to the featherweight division and quickly compiled 3-0 record. He earned a fight with champion Jose Aldo, where he was knocked out in the second round. He hasn't competed since then.

Assuncao is a Brazilian Jiu Jitsu black belt with a 3-2 record inside the WEC. After starting his career 14-1, he dropped two straight to Urijah Faber and Diego Nunes. Since then he has picked up a decision victory over LC Davis this past November.

UFC 128 features a light heavyweight title fight between Mauricio Rua and Jon Jones.

Make sure to check back with us the day of the event for free, live, round-by-round coverage of UFC 128 right here at FiveKnuckles.com! Join expert analyst Mike Williams as he takes you through the entire fight card blow-by-blow and then keep it right here for all the post-fight news and notes you can handle!