Cowboys coach Jason Garrett noted that OG David Arkin has shown "marked improvement" over his rookie season.
ESPN Dallas' Calvin Watkins projects 2011 fourth-round pick David Arkin as the Cowboys' Week 1 starter at right guard.
The Cowboys' official website feels that G David Arkin is not a lock for the 2012 roster.
Owner Jerry Jones was "real impressed" by rookie LG David Arkin in Thursday's preseason opener.
Cowboys signed fourth-round T/G David Arkin to a four-year contract.
Cowboys selected Missouri State T/G David Arkin with the No. 110 overall pick in the 2011 NFL draft.