Tarvaris Jackson tripped over defensive tackle Letroy Guion during a drill this morning and was attended to on the field for several minutes before exiting the field under his own power.

We have yet to receive official word on the extent of his injury, but a source told Pro Football Talk that Jackson suffered a grade I MCL sprain.  I found this page through a quick Google search, which states that most athletes with grade I sprains miss 1-2 weeks of play.  If T-Jack's injury is more serious, he would likely miss several weeks.

Either way, this is very disappointing news -- we're not even two days into the quarterback competition and one of the guys has already been sidelined on a day-to-day basis, at the very least.

Guion couldn't explain what on earth happened:

"We were just in the heat of the moment," Guion said. "I really don’t know what happened. Everything was moving so fast I don’t know what happened."

Needless to say, the guys were not supposed to make contact with T-Jack during this drill so something obviously went very wrong.  And as a result, the quarterback competition has stumbled out of the gate.