GREEN BAY, Wis. — Pittsburgh Steeler starting quarterback Ben Roethlisberger watched his team’s 51-34 preseason loss at Lambeau Field Thursday night from the sideline in shorts and a T-shirt.

He and second-stringer Landry Jones had already been ruled out for the game when Roethlisberger left a training camp practice on Tuesday with a possible concussion.

Big Ben looked just fine while chatting with Packer quarterback Aaron Rodgers as they walked to their respective locker rooms at halftime. After the game, Steelers coach Mike Tomlin said Roethlisberger was out of the concussion protocol.

Sounds like he’ll be back at practice Saturday.

“He’s out of the protocol. He’s a full participant,” Tomlin said.

The Steelers got off to rough start Thursday after Mason Rudolph threw the interception returned by Williams.

But five minutes later, Rudolph found JuJu Smith-Schuster for a 4-yard touchdown pass. Rudolph, who is competing with Joshua Dobbs for a backup job, was just 5 of 12 for 47 yards in playing the first half.

Dobbs didn’t look much better after throwing a 22-yard interception returned for a touchdown by rookie cornerback Josh Jackson in the third quarter.

“We’d just like to have those plays back, but the deal is you don’t get those plays back,” Tomlin said. “So, hopefully, there’s a learning process there in it for all of us.”

Dobbs finished strong and connected with rookie receiver James Washington for two second-half touchdowns . He was 12 of 17 for 192 yards.

Besides Roethlisberger, the Steelers didn’t have two other stars. Receiver Antonio Brown sat out, while running back Le’Veon Bell still hasn’t signed his franchise tender.

But Smith-Schuster is picking up where he left off following a promising rookie year after scoring his second preseason TD. The score wrapped up a wild opening five minutes in which the Packers raced out to a 14-point lead before the Steelers scored two straight touchdowns.

Green Bay’s backups pulled away from there.

James Conner had a 26-yard touchdown run for the Steelers in the first quarter while the Packers still had many starters on the field. Washington scored on a 19-yard pass from Dobbs after turning and extending his arms past a defender to retrieve the ball.

Though Brown didn’t play, Washington is learning from him.

“Every time he gets a rep, my eyes are on him. I’m just studying him each and every day, picking his brain, just trying to become a better receiver,” Washington said.

Steelers backup center Patrick Morris left in the third quarter with an undisclosed injury.

The Steelers host the Tennessee Titans next Saturday.