Before his bout with Lashley, he and Guida got in a scuffle at a pre-fight press conference that had to be broken up by Roy Jones Jr. Guida then suffered losses to UFC veteran Jeremy Horn and top Chechen contender Mamed Khalidov, but overcame his losing streak with a knockout win over former UFC fighter Logan Clark, ending the fight with a barrage of punches in the first round in Clark's hometown of Rochester, Minnesota.

He later dropped out of the fight due to a lower back injury sustained during training, he was replaced by Bellator fighter Chris Davis.

In 2011, Jason joined his brother Clay and started training under top mixed martial arts trainer, Greg Jackson, in an attempt to reinvent his fighting career.

[2] On November 16, 2012 Guida was scheduled to make his return against former UFC veteran Jason Brilz in the main event of Disorderly Conduct 13.

Guida fought Anthony Gomez at Bellator 112 on March 14, 2014, after his original opponent Sean Salmon pulled out for undisclosed reasons.