That'll put a damper on any good feelings, right? It turns out that Posada's knee problems are a result of a torn tendon in his hamstring.

Yankees catcher Jorge Posada has a torn hamstring tendon in his left knee and will be sidelined at least a few days.

Posada wasn't placed on the disabled list following his MRI exam that revealed the injury, but the club said Thursday that it planned to call up a catcher from the minor leagues on Friday. Posada is scheduled to be evaluated in the next few days.

Did someone on the team kick a black cat? I mean, I know it's a old team...but come on, this is getting ridiculous! Posada is vital part of this team and not having any sort of suitable replacement exacerbates the situation. Hopefully, this turns out not to be a lingering problem but when I hear the words torn and tendon, it nevers seems like an easy injury to recover from.

Update: The NY Post has a more detailed story about the tendon. Here's the highlight:

"Hopefully, we can avoid the DL," Cashman said. "We'll see in the next few days. Jorge said he felt better [yesterday] than he did [Wednesday]. If the swelling and pain don't dissipate, it could be a DL. I can only tell you what I have been told, and it's short term, but I can't define short term."

Working in the Yankees' favor is the tendon isn't a big part of the knee's function.

"It's the one they use for transplants," Cashman said. "It's one you don't need. It's an unusual injury."