Supernaw only appeared in one game a season ago with Houston but has familiarity of Gary Kubiak's offense. Though the Ravens top three tight ends are Dennis Pitta, Owen Daniels and Crockett Gillmore, it's not out of the question for Supernaw to compete for a 53-man roster spot. The Kubiak offense loves utilizing tight ends in various ways, meaning that if Supernaw can prove he's worth a spot, he could earn one.
Rackley is an intriguing choice, given that he actually has quite a bit of experience. He's started 25 games as a guard with the Jaguars, though he sat out the 2012 season due to injury. Chapas, as mentioned earlier Monday, has bounced around on the Cowboys, Lions and Jaguars practice squads since Dallas selected him in the seventh round in the 2011 draft.
Last year in training camp, Furstenburg became a bit of a fan favorite with some solid play during practice and preseason games. It wouldn't be out of the question for Furstenburg to be brought back if he's available and the organization can find a roster spot to replace him with.
But it's apparent that the Ravens favor Supernaw over him at this time, most likely due to offensive scheme fit. We'll have to see where Furstenburg winds up when it's all said and done.