Blake Griffin, a day after officially signing a 5 year extension with the Clippers, has "twisted" his left knee during a Team USA scrimmage. Griffin had swelling in the knee and "experienced some left knee discomfort". However, there is no medical assessment of the injury so far.

Griffin will travel to Los Angeles today for a MRI by the Clippers' medical staff, and on Sunday, he will receive an evaluation by the same doctor (Neal ElAttrache) who repaired Griffin's left kneecap stress fracture in 2010.

More after the jump.

The left knee that Griffin injured during Team USA Practice is the same knee that Blake sprained in Game 5 in the first round of last season's playoffs.

Team USA basketball chairman Jerry Colangelo had this to say about the injury:

"He showed no indication of any problem since he’s been here," Colangelo told USA Today. "Obviously he may have tweaked it. But he had discomfort. That’s the only way I can describe it and it resulted in some swelling. I saw him last night and he was just fine.

"He didn’t go down grabbing his knee or in a collision. He had a very strong workout yesterday."

It's ironic of course, that Griffin's injured just a the day after the Clippers sign him to a massive contract extension. Has the "curse" made a vengeful return?

If you can handle it, Team USA exhibition game versus the Dominican Republic is scheduled for 6pm. Griffin will be replaced by Anthony Davis, the rookie out of Kentucky drafted number one by the New Orleans Hornets.