The Dallas Cowboys lost some key offensive line depth during NFL free agency, with versatile interior lineman Brock Hoffman signing with the Pittsburgh Steelers and reserve guard Rob Jones making his way to the San Francisco 49ers . While the losses didn't make major NFL headlines, they delivered a blow to Dallas. Considering how the Cowboys have struggled with injuries along the offensive line in recent years, Dallas is all too familiar with the importance of depth in the trenches. On Monday, the Cowboys made an under-the-radar move to bolster the unit, which could be another undrafted free agent steal for the team. NFL agent Brett Tessler announced that the Cowboys have agreed to a deal with interior offensive lineman DJ Wingfield , who was also invited to rookie minicamp with the Denver Broncos. Wingfield had a successful tryout during rookie minicamp and will get to hang around The Star a little bit longer after an unusual journey to the NFL.…