The Cincinnati Bengals signed Marshall Newhouse this offseason to boost the depth of the offensive line.

Though he was expected to be a backup, Newhouse has essentially been a starter this offseason with injuries along the o-line forcing him to get plenty of first-team reps at left tackle.

Now, he may be the one dealing with an injury. Late in Tuesday's practice, Newhouse was seen being carted off the field, and head coach Marvin Lewis offered no update on his status.

An unrestricted free agent who played 47 games with 31 starts for Green Bay over the last four seasons, Newhouse (6-4, 319; Texas Christian) is a fifth-year NFL player for 2014. He saw action in 14 games with two starts for Green Bay last season. From 2011-12, he played in every game, with 29 starts.

However, Newhouse has had his fair share of struggles. He had a ranking near the bottom of 2014 free agent offensive tackles by Pro Football Focus. His -9.7 rating brings doubt he'll ever be anything more than a backup in Cincinnati.

To this point, during OTAs and training camp Newhouse was used at both tackle and guard.