The Ravens are working out tight ends Emmanuel Ogbuehi, Kellen Davis, Matt Mulligan and Jake Murphy today at team headquarters, according to sources.
Ogbuehi played collegiately at Georgia State and has previous NFL stints with the Washington Redskins, Miami Dolphins and Cleveland Browns. He was recently cut from the Browns' practice squad. He was signed by the Dolphins to a reserve-future deal after spending time on their practice squad last year.
The 6-foot-2, 230-pound tight end caught 47 passes for 581 yards in 28 games in college.
Murphy is a 6-foot-4, 250-pound former Oakland Raiders tight end. He went undrafted out of Utah, where he caught 68 passes for 766 yards and nine touchdowns. He caught 25 passes for 417 yards as a senior despite missing the final five games with a broken wrist.
Mulligan, 29, has played for the Chicago Bears, New York Jets, St. Louis Rams, New England Patriots and Green Bay Packers. He was released last week by the Bears.
At 6-foot-4, 267 pounds, Mulligan is primarily a blocking tight end. He has played in 50 games with 20 starts and 14 catches for 144 yards and one touchdown.
He spent his first NFL season on the practice squad of the Miami Dolphins and the Tennessee Titans, and then he was claimed off waivers in 2009 by the Jets after being released by Tennessee during training camp.
Davis is a former Chicago Bears fifth-round draft pick who has also played for the Cleveland Browns, Seattle Seahawks and New York Giants. He was last with the Giants.
The former Bears fifth-round draft pick from Michigan State has caught 50 passes for 561 yards and a dozen touchdowns in his career.
Davis has excellent size at 6-foot-7, 265 pounds.
The Ravens are looking to bolster depth at the position following a season-ending right hip injury and surgery for tight end Dennis Pitta. He fractured and dislocated his hip one year after suffering a fracture and dislocation of his right hip.