The Casey Rabach signing is starting to make even more sense.
Ravens center Matt Birk will have his left knee scoped and will miss two weeks, according to his agent. As a result, Rabach, who the Ravens signed yesterday, will be counted on to fill in with Birk sidelined.
Birk, a six-time Pro Bowler, has battled knee injuries recently, and said at the end of last season that needed to have his knee drained every week in order to play. The 35-year-old center has not missed a game the last five seasons, but his knee has flared up recently, and is certainly an issue going forward.
The hope is that this procedure will clear things up and allow Birk to be ready for the start of the regular season, but it's hard to tell when you're talking about a player in his mid-30s with 13 years of football under his belt.
This is looking a bit down the road, but if the scope is ineffective and Birk is unable to come back healthy, he might become a salary cap casualty. With the Ravens needing to clear cap space, they might not be able to hang on to Birk and his $3 million salary if he can't return near full strength.
With Birk missing practice the last two days and Rabach yet to arrive at training camp, the Ravens have turned to two undrafted rookies - Ryan Bartholomew and Tim Barnes - at the center position.