2015 San Diego Chargers undrafted free agents

SAN DIEGO -- The San Diego Chargers signed 21 undrafted free agents after Saturday's draft. Here's a closer look at each player:

LB Ikechi "Chi Chi" Ariguzo, Northwestern: At 6-3 and 230 pounds, Ariguzo led the Wildcats with 104 tackles, earning All-Big Ten honorable mention honors. Ariguzo ran a 4.73-second 40-yard time at his pro day.

CB Manuel "Manny" Asprilla, Boston College: At 5-11 and 183 pounds, Asprilla is a three-year starter who finished with 70 tackles and nine pass breakups for the Eagles.

OL Ben Beckwith, Mississippi State: Beckwith is a 6-3, 306-pound guard who has experience playing center in college. He developed from a walk-on in 2013 to a first-team All-SEC selection in 2014.

DE Cameron Botticelli, Minnesota: Botticelli started all 13 games in 2014, finishing with 29 tackles -- including nine tackles for a loss -- and three sacks. The 6-5, 290-pound Botticelli was an All-Big 10 honorable mention selection.

OT Tyreek Burwell, Cincinnati: At 6-5 and 295 pounds, Burwell played in 12 games, making five starts at left guard for the Bearcats last season.

OT Cameron Clemmons, Western Kentucky: At 6-6 and 305 pounds, Clemmons played in 12 games last year for the Hilltoppers, starting three at left tackle and nine at right guard.

WR Titus Davis, Central Michigan: He joins a former teammate, safety Jahleel Addae, in San Diego. At 6-1 and 196 pounds, Davis set the all-time school record for career receiving touchdowns (37) and receiving yardage (3,700) while at Central Michigan.

LB Nick Dzubnar, Cal Poly-San Luis Obispo: Dzubnar, 6-2 and 250 pounds, finished second in tackles in the Football Championship Subdivision with 167.

RB Jahwan Edwards, Ball State: At 5-9 and 220 pounds, Edwards rushed for 1,262 yards and 12 touchdowns at Ball State. He ran a 4.80-second, 40-yard time at his pro day.

TE Eric Frohnapfel, Marshall: Fohnapfel, who is 6-7 and weighs 235 pounds, started all 14 games in 2014, finishing with 37 catches for 420 yards and five touchdowns.

LB Curtis Grant, Ohio State: At 6-3 and 238 pounds, Grant totaled 131 tackles and 3.5 sacks for the Buckeyes. Grant ran a 4.65-second, 40-yard time and posted a 36-inch vertical jump at his pro day.

LB Brock Hekking, Nevada: At 6-4 and 255 pounds, Hekking finished with 22.5 sacks and 34.5 tackles for loss during his career at Nevada.

S Gordon Hill, Sacred Heart: Hill was a three-year starter. At 6-0 and 220 pounds, he led Sacred Heart with 104 tackles and also recorded six sacks, two interceptions and two fumble recoveries in 2014.

K Josh Lambo, Texas A&M: A former goalkeeper drafted by Major League Soccer's FC Dallas, Lambo left the Aggies as the most accurate kicker in school history, making 21 of 25 field-goal attempts (83.3 percent). He had a long of 50 yards in 2014.

S Johnny Lowdermilk, Iowa: At 6-2 and 210 pounds, Lowdermilk finished with 103 tackles and three interceptions in his final season for the Hawkeyes.

OLB Ryan Mueller, Kansas State: At 6-2 and 245 pounds, Mueller was a first-team, All-Big 12 selection, totaling 40 tackles and six sacks last season.

TE Brian Parker, Albany: At 6-4 and 260 pounds, Parker recorded 39 receptions for 500 receiving yards and five touchdowns his final season with the Great Danes.

RB Dreamius Smith, West Virginia: At 6-foot and 217 pounds, Smith rushed for 451 yards and five touchdowns in 2014. He ran a 4.5-second, 40-yard time and posted a 35-inch vertical jump at his pro day.

QB Cole Stoudt, Clemson: At 6-4 and 220 pounds, Stoudt completed 63.2 percent of passes, throwing for 1,892 yards, with nine touchdowns and 10 interceptions in 2014. His father is former Pittsburgh Steelers quarterback Cliff Stoudt.

WR Tyrell Williams, Western Oregon: Williams finished with 56 catches for 950 yards and eight touchdowns for the Division-II Wolves in 2014. The 6-4, 204-pound Williams ran a 4.42-second 40-yard time and posted a 39-inch vertical jump at his pro day.

WR Demetrius Wilson, Arkansas: At 6-3 and 200 pounds, Wilson finished with 17 receptions for 220 yards and a touchdown in Arkansas's run-first offense. Wilson missed all of 2013 with a torn ACL in is knee.