ASHBURN, Va. (AP) — 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 today 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. 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.

A KICK OFF: David Akers and Billy Cundiff were taking their competition to be San Francisco’s playoff kicker to Candlestick Park on Monday. 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, though he didn’t specify whether each would be among the 46 active players but did say “that’s conceivable.” Harbaugh indicated one of the two has already earned a lead for the job but wouldn’t say who it is. The 49ers (11-4-1) signed Cundiff on Jan. 1 to compete for a job with the struggling veteran Akers, who has made just 29 of 42 field goals this season after connecting on 44 of 52 in 2011.

COACHING ROUNDUP: Doug Marrone became the second coach scooped up by an NFL team Monday, 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.

ARIANS RELEASED: Colts offensive coordinator Bruce Arians returned to Indianapolis on Monday night after being released from a Baltimore hospital following a 36-hour stay for an undisclosed illness. Arians was admitted to the hospital Sunday morning after complaining he felt ill at the team breakfast. Without Arians, quarterbacks coach Clyde Christensen called the plays in the 24-9 season-ending loss to the Ravens.