From the looks of it, the Cowboys may be without one, maybe even two offensive lineman when they take on the Carolina Panthers in week one. Travis Frederick is sidelined with Guilliain Barre Syndrome which is a disease that attacks the nervous system. It is unclear how long Frederick will be out, but it definitely could be for part of the season. Zack Martin is also currently sidelined with a knee injury. With both Frederick and Martin sidelined, Kadeem Edwards and Joe Looney are getting playing time with the first team in practice, and are slated to be the starters in week one, if both normal starters are out.