McGill is in the mold of large cornerbacks like Seattle Seahawks standout Richard Sherman.
The 6-foot-3, 211-pounder ran the 40-yard dash in 4.51 seconds at the combine and registered a 39-inch vertical leap and a 10-9 broad jump.
McGill was an honorable-mention All-Pac-12 selection after being a junior college All-American.
McGill is regarded as a strong tackler adept in press coverage. He had shoulder surgery that sidelined him in 2012, but he had 28 tackles, 12 pass deflections and an interception last season.
He's drawing third-round grades from draft analysts.
Fortt is a middle to later-round draft target who ran the 40-yard dash in 4.7 seconds at the combine and improved his time to 4.66 seconds at his Pro Day.
The 6-foot-2, 242-pounder bench pressed 225 pounds 30 times at the combine and had a 36-inch vertical leap and a 10-foot broad jump.
A junior who declared early for the draft, Fortt transferred from Penn State following the Jerry Sandusky scandal. He had 64 tackles, 3.5 for losses, and a half-sack last season.
He missed the 2012 season at Cal after undergoing knee surgery. For the Nittany Lions, Fortt had 50 tackles, seven for losses and 2.5 sacks.
The Ravens were among the teams that attended the Cal Pro Day where Fortt had a short shuttle time of 4.35 seconds and a three-cone drill of 7.12 seconds.
Among the Ravens' other official visits were: North Carolina tight end Eric Ebron, Washington State safety Deone Bucannon and USC wide receiver Marqise Lee.