Sources: Rua to fight Griffin at UFC: Rio

Fresh off losing the UFC light heavyweight title in his first attempted defense, Mauricio "Shogun" Rua will look to rebound against the same opponent who welcomed him to the fold in 2007.

Sources have confirmed to ESPN.com that Rua and Forrest Griffin, another former UFC titleholder, have agreed to meet at UFC: Rio, scheduled for Aug. 27 in Rio de Janeiro.

The bout was first reported by Brazilian news sites.

Rua (19-5) was widely considered the No. 1 light heavyweight in the world before losing his title to Jon Jones at UFC 128 last month. The former Pride champion won the belt with a first-round knockout over Lyoto Machida but was dominated by Jones in his next fight, which ended in the third frame.

He was favored to defeat Griffin in his promotional debut at UFC 76 but suffered a third-round submission loss.

Griffin (18-6) used that upset win to catapult him to a title fight against Quinton Jackson, where he won a unanimous decision at UFC 86. He's gone 2-2 since then, including a loss to Rashad Evans, in which he forfeited the belt.

The Las Vegas-based fighter is coming off back-to-back decision wins over Tito Ortiz and Rich Franklin.

Brett Okamoto covers mixed martial arts for ESPN.com.