Tracy Porter, Stacy McGee upgraded

ALAMEDA, Calif. -- Cornerback Tracy Porter and rookie defensive tackle Stacy McGee were upgraded on the Oakland Raiders' injury report Thursday in advance of Sunday night's game against San Diego.

Center Stefen Wisniewski, though, missed his second straight practice with a sprained right knee. The Raiders have been practicing with backup center Andre Gurode at left guard and Lamar Mady at center, but if Wisniewski cannot play against the Chargers, then Gurode would move to center and Lucas Nix would regain his job at left guard.

Following, then, is the Raiders’ injury report for Thursday:

Did not participate: SS Tyvon Branch (ankle), RB Darren McFadden (right hamstring), Stefen Wisniewski (right knee)

Limited practice: DE Jason Hunter (quad), LG Lucas Nix (ankle), RT Tony Pashos (groin), FB Marcel Reece (left knee), LT Menelik Watson (right knee), DT Stacy McGee (shoulder)

Full practice: QB Terrelle Pryor (concussion), CB Tracy Porter (ribs), FS Charles Woodson (non-injury related)