Panthers linebacker Jon Beason is out for the season after tearing his left achilles tendon.
According to the Panthers website, an MRI on Monday revealed the injury, which will cause Beason to miss the entire 2011 season.
Beason left on a cart in the third quarter of Sunday’s game against the Arizona Cardinals. Beason had been limited in practice because of a left ankle injury. He fell to the turf on a 48-yard touchdown pass by tight end Jeff King.
"We were deep at the (middle linebacker) position to begin with," said Panthers coach Ron Rivera. "This doesn't make it any easier, obviously, because you are losing a very good player, but the transition should be easy."
Rivera announced that Dan Conner, who took Beason's spot after the injury Sunday, will replace Beason at the starting middle linebacker spot.
"Dan is a stout, physical player that plays downhill," Rivera said. "He is aggressive at the point of attack. What he doesn't do as well is he isn't a subpackage player for us in terms of the nickle passing game. He is that first and second down guy."
In his limited action Sunday, Rivera was impressed with Conner's play.
"He played very well," Rivera said. "He only played in 18 plays, but he accounted for six makes or six involved plays. He played very well and very physical. He had prepped all week to play anyways. It was a heck of a job he had."
The Panthers take on the defending Super Bowl champion Green Bay Packers on Sunday at Bank of America Stadium at 1 p.m.