Injury update: Panthers defensive on O-line

CHARLOTTE, N.C. -- Apparently, the best offense is a good defense -- at least on the line of the Carolina Panthers.

Former defensive lineman Nate Chandler is slated as the starter at right guard with Chris Scott (knee) day-to-day and backup Jeff Byers out for the rest of the season after undergoing Lisfranc surgery on Monday.

On Wednesday, the Panthers also moved backup nose tackle Sione Fua to guard to help with depth. Coach Ron Rivera said the team felt comfortable making that move with tackle Dwan Edwards fully recovered from a hamstring injury that kept him out five games.

Fua isn't likely to see snaps on the offensive line on Sunday at San Francisco. The Panthers brought veteran guard/center Geoff Hangartner back on Tuesday to backup Chandler.

Hangartner worked with the second team much of Wednesday's practice, his first since being released in training camp.