The Bengals have agreed to a five-year contract extension with defensive tackle Domata Petko, according to The Associated Press. Peko, a 6-3, 319-pounder on the interior of the defensive line, reached agreement Thursday on the $29.3 million extension that will keep him a Bengal through 2014. Peko has the ability with escalators to earn $30.3 million over the life of the extension.