FLOWERY BRANCH -- The Falcons have signed defensive end Cliff Matthews and fullback Patrick DiMarco to multi-year contract extensions today, the team announced.

The Falcons also signed free agent wide receiver Nick Williams.

The terms of the deals were undisclosed.

Matthews, 6-foot-4, 275 pounds, was selected by the Falcons in the sixth round (230th overall) of the 2011 draft. In four seasons with the Falcons, the South Carolina product has appeared in 32 games, primarily on special teams.

Last season, Matthews played 116 snaps from scrimmage in seven games while totaling six tackles (four solo) on defense and adding three special teams tackles.

September 18, 2014 Atlanta - Atlanta Falcons wide receiver Devin Hester (17) runs for a touchdown against the Tampa Bay Buccaneers as Atlanta Falcons fullback Patrick DiMarco (42) clears his way in the first half during the first half in their NFL football game on Thursday, September 18, 2014. HYOSUB SHIN / HSHIN@AJC.COM Atlanta - Atlanta Falcons wide receiver Devin Hester (17) runs for a touchdown against the Tampa Bay Buccaneers as Atlanta Falcons fullback Patrick DiMarco (42) clears his way in the first half during the first half in their NFL football game on Thursday, September 18, 2014. HYOSUB SHIN / HSHIN@AJC.COM

Credit: D. Orlando Ledbetter

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Credit: D. Orlando Ledbetter

DiMarco, 6-1, 240 pounds, was originally signed by the San Diego Chargers as an undrafted free agent out of South Carolina following the 2011 NFL Draft. He played with Kansas City in 2012 before being signed to the Falcons practice squad in 2013. In two seasons in Atlanta, DiMarco has played in 30 games with 14 starts while logging 17 receptions for 111 yards and one touchdown.

Last season, he was used exclusively as a blocker and pass catcher. He played 214 snaps from scrimmage with no rushes. He caught nine passes for 62 yards and a touchdown.

Nick Williams returns a punt against the Buccaneers during the exhibition season of 2013. (credit: Al Messerschmidt/Getty Images)

Credit: D. Orlando Ledbetter

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Credit: D. Orlando Ledbetter

Williams, 5-10, 184 pounds, was originally signed by the Washington Redskins as an undrafted free agent out of Connecticut following the 2013 draft. He played in five games as a receiver and returner during his rookie campaign in 2013, while Falcons offensive coordinator Kyle Shanahan was with the Redskins.

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COMBINE STORIES

Todd Gurley speaks about autograph-signing caper

Bucs appear set to cast future with Jameis Winston

Todd Gurley intriguing prospect to NFL teams

Chris Conley puts on a dazzling show at the combine

Waller, Smelter out to prove NFL standing at the combine

VIDEO DEPARTMENT

Watch: D. Led -- Falcons news at the combine

Watch: NFL Network's Mike Mayock at the combine

Watch: Todd Gurley has interviews set up with 24 NFL teams

Watch: Falcons general manager Thomas Dimitroff at the combine

Watch: Falcons coach Dan Quinn at the combine

Watch: Rams GM Les Snead on the pass-rush talent at the combine

FALCONS COMBINE MEETINGS

Oregon DE Arik Armstead talked scheme with the Falcons

Falcons met with Alabama quarterback Blake Sims

Falcons to meet with Florida DE Dante Fowler Jr.

Falcons met with Wake Forest CB Kevin Johnson

Falcons met with Alabama safety Landon Collins

PHOTO GALLERIES

Photographs from the 2015 NFL scouting combine

Photos of players with Georgia ties at the scouting combine

Photos of NFL pass rusher set to enter free agency