A number of players who spent last year on the Lions' practice squad are among the 29 under contract and will be in Allen Park taking part in the workouts. Players who haven’t accrued a season towards their NFL pension can participate in the minicamp.
Here is a breakdown of the mini-camp roster:
John Laub, 6-2, 215, Richmond (tryout player): Started the first seven games of the season before suffering a season-ending injury. Completed 143-of-237 passes for nine touchdowns and 1,722 yards with two interceptions.
RUNNING BACK (3)
Theo Riddick, 5-9, 200, Notre Dame (drafted in sixth round): Played both receiver and running back at Notre Dame. Played in all 13 games with eight starts at running back as a senior. Led Notre Dame with 190 carries for 917 yards (4.8 avg.) and tallied a team-best 1,287 all-purpose yards.
Tyrell Sutton, 5-8, 211, Northwestern (tryout player): Bounced around to the Packers, Panthers and Seahawks before playing in the UFL in 2012.
WIDE RECEIVER (9)
Corey Fuller, 6-2, 196, Virginia Tech (drafted in sixth round): Former track star turned football player started in eight of 13 games last year and had 43 receptions for 815 yards and six touchdowns.
Bakari Bussey, 6-2, 205, Ohio (tryout player): Has good size at 6-foot-2, 205-pounds. Finished second on the Ohio team with 37 receptions. His 313 yards receiving were ranked fourth.
Gilleylen Curenski, 5-11, 213, Nebraska (tryout player): A receiver who was switched to running back late in his college career. He signed with Green Bay last offseason but did not make the team.
Ryan Nehlen, 6-2, 203, West Virginia (tryout player): Nehlen has good size at 6-foot-3, 205-pounds. He had seven catches for 37 yards and a touchdown in 13 games last year.
Andre Snipes-Booker, 5-10, 172, Marshall (tryout player): Caught 31 passes for 644 yards (20.4 average) for Marshall this past season. He also returned 11 punts for a 5.2 average.
Travis Tarpley, 5-6, 174, Delaware State (tryout player): A big-play threat in the Hornets' offense as a senior, Tarpley had 86 catches for 1,058 yards and seven touchdowns.
TIGHT ENDS (2)
Michael Williams, 6-6, 270, Alabama (drafted in the seventh round): A block-first tight end who has a good shot to make the team as an H-back and third tight end.
OFFENSIVE TACKLE (3)
Mike Salazar, 6-4, 324, William & Mary (tryout player): All-CAA second-team selection as a senior. Started 22 games at left tackle the last two seasons and 12 games at right tackle in 2010.
Larry Warford, 6-3, 333, Kentucky (drafted in the third round): Warford started the last three seasons at right guard for Kentucky and will have a shot to be the Lions’ Day 1 starter there.
Rodney Austin, 6-4, 311, Elon (2012 Lions practice squad): Austin will also be in the mix to win the right guard spot. He impressed Lions coaches with his athleticism on the practice squad last season.
Darren Keyton, 6-3, 305 Central Michigan (tryout player): Started all 13 games at right guard and helped anchor an offensive line that allowed just 15 sacks, which ranked No. 17 nationally.
Trevor Marrongelli, 6-3, 303, Kansas (tryout player): Started all 12 games at center, giving him 24 consecutive starts to end his career. Helped pave the way for a running game that averaged 4.6 yards per carry.
DEFENSIVE TACKLE (3)
Xavier Boatwright, 6-5, 305, Presbyterian (tryout player): Had 49 tackles and 1.5 tackles for loss as a senior. Has good size at 6-4, 305.
Xavier Proctor, 6-5, 282, North Carolina Central (tryout player): Started all 11 games on the Eagles' defensive front as a senior. Named All-MEAC Second Team. Compiled 42 total tackles (21 solo), 10.5 tackles for a loss and four sacks.
DEFENSIVE END (4)
Ziggy Ansah, 6-5, 271, BYU (drafted in the first round): We’ll get our first look of Ansah’s superior athleticism. He only started nine games at BYU but is touted as a rare athlete. He’ll have a chance to start Day 1 at right defensive end for the Lions.
Devin Taylor, 6-7, 276, South Carolina (drafted in the fourth round): He was overshadowed some by Jadeveon Clowney at South Carolina. He’s extremely athletic as former triple-jump state champion in high school. Started all 13 games and logged 40 tackles with 8.5 tackles for loss and three sacks.
Hank Keighley, 6-3, 260, Toledo (tryout player): Started all 13 games for the Rockets as a senior and finished with 39 tackles, 8.5 tackles for loss and two sacks.
Scott Vallone, 6-2, 281, Rutgers (tryout player): Played well in the East-West Shrine game. Three-year starter at defensive tackle finished the season with 58 tackles (20 solo), including 8.5 tackles for loss and 2.5 sacks.
Brandon Hepburn, 6-4, 235, Florida A&M (drafted in the seventh round): He was very productive as a senior, tallying 86 tackles (9.5 for loss), 5.5 sacks, seven pass breakups and a forced fumble. He ran the 40-yard dash in 4.68 seconds at the combine and showed some explosiveness in drills.
Josh Francis, 6-0, 224, West Virginia (tryout player): Led West Virginia with 15 tackles for loss as a senior. He also added 57 tackles and 4.5 sacks.
Darius Slay, 6-0, 192, Mississippi State (drafted in the second round): Will not participate in the weekend minicamp after undergoing minor microscopic surgery on his knee last week.
Al-Rilwan Adeyemi, 5-9, 188, San Diego (tryout player): Spent time in the New York Giants training camp last year but didn’t make the team. Had two interceptions and defended five passes as a senior in 2011.
Michael Ray Garvin, 5-8, 182, Florida State (tryout player): A seven-time All-American sprinter at Florida State, he was a member of the Lions’ practice squad in 2009. His senior season at Florida State in 2008 he was second in the nation in kick returns, averaging 30.1 yards with one touchdown in 22 returns. Ran the 40 in 4.24 at his pro day back in 2009.
Darlos James, 5-10, 175, Maine (tryout player): Had 44 tackles and an interception in 11 games for Maine this past season.
Lance Slaughter, 6-0, 201, St, Bonaventure (tryout player): He worked out for the Lions last year but was never signed.
Martavius Neloms 6-0, 189, Kentucky (undrafted free agent signing): A versatile player who started at both cornerback and safety while at Kentucky. Had at least 50 tackles (71 in 2011) the last three seasons.
Trever Coston, 5-10, 210, Maine (tryout player): Was a tryout player in the Chicago Bears rookie minicamp last year. He’s got great speed (4.4) for the position and had 83 tackles and six interceptions his senior season at Maine. Can also return punts.
DeAndre McDaniel, 6-0, 217, Clemson (tryout player): He spent time on the Indianapolis Colts’ practice squad last year. Finished with four interceptions and 75 total tackles his senior season at Clemson in 2011.
Sam Martin, 6-1, 205, Appalachian State (drafted in the fifth round): Martin was the third-leading punter in Division 1-AA last year, averaging 45.9 yards last season, with 25 of 60 punts landing inside the 20.