Delaware middle linebacker David Mackall tried out for the Ravens during their rookie minicamp, according to sources.
He wasn't signed to a contract, though, along with Delaware wide receiver Andrew Opoku.
Mackall is an Edmondson graduate who's a former high school teammate of Ravens undrafted rookie quarterback Jerry Lovelocke, who was signed as a free agent out of Prairie View A&M.
Mackall was also invited to the Ravens' local prospect day.
Mackall recorded 84 tackles (3.5 for losses), one sack, one interception, one forced fumble and one fumble recovery last season.
A 6-foot-3, 233-pound Maryland transfer, Mackall is a converted defensive end who played outside linebacker at Delaware in 2013 when he started 10 games.
Mackall had 75 tackles and two sacks as a junior with eight tackles for losses, an interception and a forced fumble.
Mackall ran the 40-yard dash in 4.9 seconds at the Blue Hens' pro day workout. Mackall had a 9-3 broad jump and a 27 1/2 inch vertical leap.
Mackall played linebacker and defensive end for the Terps for two seasons under Randy Edsall and former coach Ralph Friedgen. He transferred after being dismissed from the team with four games remaining in 2011.
He played in 20 career games at Maryland (seven starts) and had 48 tackles, six sacks and nine tackles for losses with two forced fumbles.
At Edmondson, Mackall was a four-star recruit who had 91 tackles, six sacks, three forced fumbles and two fumble recoveries as a senior. He was the ninth-ranked player in Maryland by SuperPrep and was also recruited by Georgia, Clemson, Syracuse, Rutgers and Purdue.
He spent a year at Fork Union Military Academy in Virginia before joining the Terps.