PITTSBURGH (AP)Pittsburgh quarterback Kenny Pickett remained in the concussion protocol on Friday and is doubtful to play on Sunday when the Steelers visit Carolina.

Pickett, who left last Sunday’s loss to Baltimore in the first quarter, was limited in practice all week. Mitch Trubisky and Mason Rudolph split practice reps again on Friday and head coach Mike Tomlin remained noncommittal about who will start if Pickett can’t go.

”We’ve got some clarity about where we’re going,” Tomlin said. ”There’s just no need to land the plane until it’s required to land the plane.”

Trubisky threw for 276 yards and a touchdown after coming in for Pickett against Baltimore, but also threw three interceptions in Ravens’ territory. Rudolph hasn’t been active for a game all year after finishing third in the preseason quarterback derby.

Tomlin said he’s ”extremely comfortable” with either player.

”We’ll see how secretive (Tomlin) wants to keep it,” Trubisky said. ”We’re ready. I’m ready. I’m looking forward to the opportunity. I’ll be ready to go.”

Inside linebacker Myles Jack is also doubtful with a groin injury for Pittsburgh (5-8). All other players on the injury report – including wide receiver Diontae Johnson (hip) and tight end Pat Freiermuth (foot) – are expected to play.

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