It's an exercise coordinated by scouts, including Joe Douglas and Mark Azevedo, that has led to wide receiver Marlon Brown and kicker Justin Tucker signing with the Ravens after the draft during the past few years, along with previous free agents like Priest Holmes, Bart Scott, Mike Flynn and Will Demps.
Here's a look at the Ravens' undrafted free-agent class this year, which includes Middle Tennessee State cornerback Sammy Seamster, who chose the Ravens over multiple competing offers, and highly regarded North Carolina offensive tackle James Hurst:
Middle Tennessee State CB Sammy Seamster
Size: 6 feet, 200 pounds
Background: Seamster visited the New York Giants, Jacksonville Jaguars, Kansas City Chiefs and Miami Dolphins. He ran the 40-yard dash in 4.44 seconds and had a 35-inch vertical leap and a 10-4 broad jump. Seamster recorded 33 tackles, with an interception, two forced fumbles and two fumble recoveries as a senior.
North Carolina OT James Hurst
Size: 6 feet 5, 300 pounds
Background: A former blue-chip recruit who chose the Tar Heels over Alabama, Florida, Georgia, Ohio State and Notre Dame, Hurst was once projected as a potential third-round draft pick. However, he broke his left fibula in a bowl game and was unable to work out at the NFL scouting combine. He wasn't back to 100 percent by his campus Pro Day workout, consequently running the 40-yard dash in 5.59 seconds. Hurst's medical outlook is good, and he started a school-record 49 games at left tackle. He was known for his aggressiveness and ability to finish blocks and block downfield.
Size: 6-foot-2, 310 pounds
Background: Brown played in 43 games for the Owls, finishing his career with 72 tackles, including 41 solos, one sack and one forced fumble. He was a team captain last season who had 17 tackles, two for losses, Brown visited the New York Giants prior to the draft. He ran the 40-yard dash in 5.22 seconds at his campus Pro Day workout and bench pressed 225 pounds 33 times. Brown had a 28.5-inch vertical leap and a 9-4 broad jump. As a junior, Brown had 28 tackles, 3.5 for losses, and a half-sack while starting eight of 11 games at nose guard.
Montana Tech LB Ryan Jones
Size: 6-foot-3, 249 pounds
Background: He had 83 tackles, 8.5 for losses, five sacks and one interception last season. He finished his career with 127 tackles and 10.5 sacks. Jones ran the 40-yard dash in 4.68 seconds and bench pressed 225 pounds 28 times at his Pro Day workout. He had a 10-0 broad jump and a 34-inch vertical leap.
Texas A&M CB Tramain Jacobs
Size: 5-foot-11, 182 pounds
Background: Jacobs played in 26 games in two season. He recorded 55 tackles, 39 solos, two interceptions and 13 pass deflections. He played two seasons at Mississippi Gulf Coast Community College where he recorded 34 tackles, two interceptions and 13 pass deflections.
North Carolina A&T CB Deji Olatoye
Size: 6-foot-1, 198 pounds