The LCL is one of four ligaments in the knee. Shanahan initially said Griffin had a "strain of the ACL" before later correcting the diagnosis to a sprained LCL, with the coach stepping away from the podium to demonstrate the location of the ligament involved. A Grade 1 sprain typically means the ligament is stretched or has some minor tears and usually doesn't require surgery. The upshot: Griffin has a mild, or Grade 1, sprain of the lateral collateral ligament located on the outside of the knee, caused when he was hit by defensive tackle Haloti Ngata at the end of a 13-yard scramble late in regulation of the 31-28 overtime win over the Baltimore Ravens. All the medical terms associated with Robert Griffin III's knee injury can be boiled down to one simple message: It's not too bad. 21 that likely would have been a touchdown precipitated a 29-26 overtime loss but the rookie has 21 catches this season for 252 yards and three touchdowns.