Mathis done for the year, and this doesnt sound good. This sounds like on of those things players never come back from.
http://sports.espn.go.com/nfl/columns/s ... id=2162009 ESPN.com confirmed Wednesday night through several sources, including agent Drew Pittman, that Mathis tore the anterior cruciate ligament and two of the three other ligaments in his knee when he landed awkwardly during the afternoon practice while defending a pass. Mathis will undergo surgery next week and will be placed on injured reserve.
Just the anterior cruciate ligament injury alone would be enough to end Mathis' season. But the damage to other ligaments could make the injury career-threatening and the ninth-year veteran certainly faces a long rehabilitation to get back on the field again.
The ligaments I know of in the knee are your ACL, PCL, MCL.
Any doctors in the house?
I hate too see any player get injured, regardless of what team it is. That being said, I was never a big Mathis fan myself, but I sure don't want to see Rossum gobbling up extra playing time because of this... that doesn't bode well for the secondary.