The scariest moment of camp to date for the Cincinnati Bengals came on Sunday when starting safety George Iloka fell to the ground while pursuing a play in team drills, grabbing his right knee.

Iloka, 27, a mainstay in the Bengals secondary since being drafted in the fifth round in 2012, did not leave practice but did get an MRI on Monday. The results were positive in that Iloka did not suffer any ligament tears, but The Enquirer learned through a league source that the sprain was severe enough to sideline him for three to four weeks.

That means Iloka would likely miss the entire preseason but be ready to return for the regular season opener on Sept. 10 against Baltimore.

Iloka started 16 games last season, intercepting three passes and breaking up seven passes and recording 74 total tackles.

Bengals notes: Iloka wants to level up; Billings' time is coming