ASHBURN, Va. — It doesn’t sound good for Robert Griffin III.

An injury that sidelines RG3 well into next season is a very real possibility — or at least it seemed that way Monday after coach Mike Shanahan described the results of tests on the rookie’s right knee.

Shanahan said the results are prompting the team to send Griffin to Florida on Tuesday to see renowned orthopedist James Andrews for more examinations, essentially a second opinion that will decide the team’s fate for the 2013 season.

“There is a concern,” Shanahan said. “That’s why he’s going to see him.”

Griffin tore his ACL while playing for Baylor in 2009, and Shanahan said that old injury caused Griffin’s latest MRI to prove inconclusive and produce “differences of opinion” in those who have looked at it.

“They want to take another look and have a physical exam with him,” Shanahan said, “to make sure they’re not looking at old injuries.”

A torn ACL typically requires a rehabilitation period of nine to 12 months, although some players don’t return to full health until their second season after the injury. On the other hand, one of this season’s most remarkable stories was Adrian Peterson, who returned about eight months after tearing an ACL and nearly broke the NFL’s single-season rushing record.

Coaches

Two down, five to go.

Doug Marrone became the second coach scooped up by an NFL team, hired by the Buffalo Bills. The move leaves five teams still searching for replacements for coaches who were fired a week ago — the day after the regular season ended.

Andy Reid, let go by the Philadelphia Eagles after 14 seasons, was the first to find a new job when he signed a five-year contract to coach the Kansas City Chiefs over the weekend.

Still looking for coaches are the Arizona Cardinals, Chicago Bears, Cleveland Browns, Philadelphia Eagles and San Diego Chargers.

Seahawks

Seattle pass-rushing defensive end Chris Clemonssuffered a torn ACL and torn meniscus in his left knee in Sunday’s 24-14 win at Washington.

49ers

David Akers and Billy Cundiff were taking their competition to be San Francisco’s playoff kicker to Candlestick Park.

Coach Jim Harbaugh said there’s a “good chance” both kickers will be on the roster for Saturday’s NFC divisional playoff game against the Green Bay Packers.