First-round pick Zack Martin agreed to terms with the Cowboys on a four-year, $8.967 million contract, according to sources. The offensive lineman receives a $4.8 million signing bonus as part of the deal.
Second-round choice DeMarcus Lawrence is the team's only unsigned draft choice. Anthony Hitchens, Devin Street, Ken Bishop, Ben Gardner, Will Smith, Ahmad Dixon and Terrance Mitchell already signed their rookie deals.
The Cowboys made Martin the 16th overall pick after he started 52 games, mostly at left tackle, at Notre Dame. In organized team activities, the Cowboys had Martin taking first-team snaps at right guard, where he is expected to start this season. He took backup center snaps last week.
Martin becomes the third first-round draft pick for the Cowboys in the starting offensive line. They drafted left tackle Tyron Smith ninth overall in 2011 and center Travis Frederick 31st overall in 2013.
-- Charean Williams