A featherweight championship co-main event has been added to Bellator 138, as Patricio “Pitbull” Freire defends his title against Georgi Karakhanyan.

Set for June 19 from St. Louis and the Scottrade Center, the main card airs on Spike TV. The headline bout is set to feature Kimbo Slice vs. Ken Shamrock, while Michael Chandler vs. Derek Campos has also been announced.

Freire (23-2) won the belt from Pat Curran and successfully defended it earlier this year vs. Daniel Straus. Both of his career defeats have been via split-decision.

“Karakhanyan is a fighter among the top of the weight-class,” Pitbull said, “but I’m one dimension above. If you see a fight where I’m not hit from a single attack don’t be surprised. I’m preparing to not being hit and I guarantee to show absolute superiority in this new challenge.”

Karakhanyan (24-4-2) is a former World Series of Fighting champion who earned a first round submission victory over Bubba Jenkins this past January. The two first met in 2010, with Freire scorign a third round stoppage victory

“June 19 brings an opportunity for me to avenge an old loss in this rematch with Pitbull,” Karakhanyan said. “People are going to see an all-out war, and when it is all said and done the belt is going to look great around my waist.”

Below is the current lineup:

Heavyweight: Kimbo Slice vs. Ken Shamrock

Bellator Featherweight Championship
Patricio “Pitbull” Freire (c) vs. Georgi Karakhanyan

Lightweight: Michael Chandler vs. Derek Campos