WASHINGTON — An MRI exam of the injured right knee of Washington quarterback Robert Griffin III showed that the rookie star may have suffered at least partial tears of two ligaments, according to several people with knowledge of the test results.

Washington coach Mike Shanahan said Monday that the results of Griffin's MRI were inconclusive and that Griffin would be examined Tuesday by orthopedic surgeon James Andrews in Florida. That evaluation is an attempt to determine whether the MRI results show new injuries to Griffin's anterior cruciate and lateral collateral ligaments, or previous injuries, he said.

Griffin tore the ACL in the same knee in 2009 while he was a sophomore at Baylor.

"Any time you do have a former ACL injury, or an LCL, and you look at this MRI, sometimes it's old injuries," Shanahan said.

Bills are second team to hire coach

Doug Marrone became the second coach scooped up by an NFL team Monday, hired by the Buffalo Bills. That leaves five teams still searching for coaches.

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

Still looking for coaches are Arizona, Chicago, Cleveland, Philadelphia and San Diego.

Marrone arrives in Buffalo after three seasons as the coach at Syracuse. The 48-year-old takes over for Chan Gailey, who was fired after three losing seasons.

As for the other coaching searches:

• The Cardinals interviewed their defensive coordinator, Ray Horton, and Broncos offensive coordinator Mike McCoy. Other candidates include Bengals offensive coordinator Jay Gruden and Steelers offensive coordinator Todd Haley.

• The Bears are looking at close to 10 candidates. Among them are McCoy, Montreal Alouettes coach Marc Trestman, Seahawks offensive coordinator Darrell Bevell and Colts offensive coordinator Bruce Arians, who returned to Indianapolis on Monday after being released from a Baltimore hospital following a 36-hour stay for an undisclosed illness.

• The Browns have "rebooted" their search now that Chip Kelly is staying at Oregon. Candidates include Horton, fired Cardinals coach Ken Whisenhunt, Arians and Trestman.

• The Eagles were looking at Kelly, too, but now that he's out of the mix, top candidates include McCoy, Seahawks defensive coordinator Gus Bradley, and Arians.

• The Chargers likely won't hire a coach until they settle on a general manager, although Arians is considered a coaching contender.

Around the league

Broncos running back Willis McGahee said his rehabilitation from an injured knee is on track, but "if we played a game tomorrow, no, I couldn't go."

McGahee tore a knee ligament Nov. 18 and the Broncos placed him on recallable injured reserve. He is eligible to return to practice Tuesday and could play in the AFC title game if Denver makes it.

• 49ers coach Jim Harbaugh says there's a "good chance" kickers David Akers and Billy Cundiff will both be on the roster for Saturday's NFC divisional playoff game against the Green Bay Packers, though he didn't specify whether each would be active.

Harbaugh indicated "we have a leader in the clubhouse," but wouldn't say who it was.

The Associated Press contributed to this report.