CHARLOTTE, N.C. – The Carolina Panthers could have two of their three injured offensive linemen back for Sunday's game at Tampa Bay.

Left tackle Jordan Gross and right tackle Jeff Otah practiced for a second straight day Friday, while center Ryan Kalil missed his third straight workout and is listed as doubtful to play against the Buccaneers.

Gross and Otah are listed as questionable, but participated fully in Friday's practice. Gross missed last Sunday's win over Kansas City after being knocked unconscious a week earlier against Atlanta when he was kneed in the head. Otah sat out the win over the Falcons with a sprained right ankle.

Kalil injured his right ankle against the Chiefs. Geoff Hangartner is expected to start in his place.