A fourth-round pick last year, Webb suffered a hip flexor injury that would prevent him from playing in the final two preseason games. Webb was active for 15 games as a rookie and had 13 tackles and one pass breakup but never got comfortable on the field. He had a so-so training camp and was outplayed by undrafted rookie Tyler Patmon.
With Webb gone and Orlando Scandrick suspended the first four games of the regular season, the Cowboys will likely go with rookies Patmon and Terrance Mitchell, a seventh-round pick, as their fourth and fifth cornerbacks behind Brandon Carr, Morris Claiborne and Sterling Moore.
With injuries to Joseph Randle (oblique) and Ryan Williams (cramping) the Cowboys were left with one tailback they would play tonight against the Denver Broncos -- DJ Adams. The Cowboys will not use starter DeMarco Murray or Lance Dunbar, necessitating the addition of Tanner, who played three years for the team and was recently cut by the Indianapolis Colts.