The Oakland Raiders have signed 14 undrafted rookie free agents, General Manager Reggie McKenzie announced Monday.
Billy Boyko (6-2, 240) LB - Lehigh: Played four years at Lehigh, playing in 41 games. He played in 11 games with 10 starts as a senior, leading the team with 104 tackles (53 solo).
Adrian Bushell (5-10, 190) DB - Louisville: Played two years at Louisville after also playing at Cedar Valley Community College and Florida. He posted 62 tackles (45 solo) and one interception as a senior at Louisville.
Bobby Cowan (6-4, 220) P - Idaho: Played four years at Idaho, becoming the Vandals' all-time leading punter with an average of 44.7 yards. He punted 70 times as a senior, averaging 43.1 yards per attempt.
Deveric Gallington (6-3, 315) C - Texas Tech: Finished collegiate career making 38 consecutive starts on the offensive line. He started all 13 games as a senior and helped the team rush for 1,674 yards, the most for Texas Tech since 1998.
Shelton Johnson (6-0, 197) S - Wisconsin: Saw action in 46 games with 23 starts in four years at Wisconsin. He played in 11 games with 10 starts as a senior in 2012, and recorded four interceptions as a junior in 2011.
Brian Leonhardt (6-5, 255) TE - Bemidji State: Played four years at Bemidji State. He ranked third on the team with 25 receptions for 343 yards and three touchdowns as a senior.
Lamar Mady (6-2, 315) G - Youngstown State: Played two years at Youngstown State after transferring from Butler County Community College. He started all 11 games as a senior in 2012.
Sam McGuffie (5-10, 200) WR - Rice: Played three years at Rice after transferring from Michigan. He became the first Rice player with 1,000 career yards in both rushing and receiving. As a senior, he totaled 54 receptions for 603 yards and five touchdowns.
Kyle Padron (6-3, 225) QB - Eastern Washington: Played one season at Eastern Washington after transferring from SMU. He played in 11 games as a senior, completing 175-of-296 passes for 2,491 yards and 17 touchdowns. He posted a 12-9 record in 21 starts at SMU.
Adam Steiner (6-2, 240) LS - Akron: Saw action as Akron's long-snapper for four years. His father, Charles, played in the NFL with the Buffalo Bills.
Kurt Taufa'asau (6-2, 300) DT - Wyoming: Played two years at Wyoming after transferring from New Mexico Military College. He played in seven games as a senior, totaling 22 tackles (13 solo) and 1½ tackles for loss.
Conner Vernon (6-0, 192) WR - Duke: Played four years at Duke, totaling 198 receptions for 2,675 yards and 13 touchdowns. A two-time All-ACC selection, he became the only player in conference history to register multiple seasons with 70 or more receptions.
John Wetzel (6-7, 315) T - Boston College: Saw action in 38 games in four years at Boston College. He started all 12 games as a senior in 2012, for an offense that averaged 259.3 passing yards per game.
Deonte Williams (5-10, 213) RB - Cal Poly: Played two years at Cal Poly after transferring from Sierra College. An Oakland native, he rushed for 1,547 yards on 231 carries and 12 touchdowns as a senior in 2012.