PITTSBURGH — Mike Tomlin isn’t underestimating Ben Roethlisberger’s healing powers.

The Pittsburgh Steelers’ coach is keeping the door open for his franchise quarterback and his surgically repaired left knee to return Sunday at Baltimore.

Roethlisberger tore cartilage in the knee Oct. 16 during the second quarter of a loss to Miami and underwent outpatient surgery the following day.

He stood on the sideline in sweatpants while backup Landry Jones played capably in a 27-16 loss to New England and was able to practice a bit during Pittsburgh’s bye week and again Monday.

LIONS: Matthew Mulligan, a West Enfield native who played two years at the University of Maine, was signed Tueday by Detroit.

Mulligan signed with the Lions in April, but was cut at the end of August.

A 31-year-old tight end, Mulligan played in 12 games for Buffalo last season, including five starts, and had one reception. The Lions are Mulligan’s seventh team.

n Defensive end Armonty Bryant has been suspended three games for violating the league’s policy on substance abuse.

WASHINGTON: Left tackle Trent Williams was suspended four games for violating the NFL’s substance abuse policy.

It’s his second four-game suspension and first since 2011.

TITANS: Tennessee placed wide receiver Andre Johnson on the reserve/retired list and replaced him on the roster by promoting receiver Tre McBride from the practice squad.

Johnson informed the Titans (4-4) of his retirement Monday.

EAGLES: Wide receiver Josh Huff was charged with possession of a 9 mm handgun without a permit and having a small amount of marijuana after he was pulled over for speeding, according to a court complaint.

Huff was pulled over on the New Jersey side of the Walt Whitman Bridge around 11 a.m. Tuesday.

JETS: New York claimed running back Knile Davis off waivers from Green Bay, adding depth to its backfield.

Davis was acquired Oct. 18 by Green Bay from Kansas City for a conditional draft choice.

He had five carries for 5 yards in two games with the Packers before being waived Monday.

DOLPHINS: Safety Reshad Jones considered shoulder surgery last offseason but decided against it, and now he’s out for the season after aggravating his injury.

CARDINALS: Arizona placed left tackle Jared Veldheer (torn triceps) and tight end Ifeanyi Momah (broken wrist) on injured reserve.

BUCCANEERS-LIONS: Tampa Bay traded cornerback Johnthan Banks to Detroit for a conditional seventh round pick in the 2018 draft.

VIKINGS: Coach Mike Zimmer is recovering from what the team called a minor medical procedure performed the morning after a loss at Chicago.

BILLS: Percy Harvin is preparing to come out of retirement to reinforce the team’s injury-depleted group of receivers.

CHIEFS: Running back Jamaal Charles is going back on injured reserve after developing swelling in his surgically repaired right knee, a person familiar with the decision said.