WATCH: Andrew Luck throws ghastly pick-six to Jayon Brown

Backed up near his own end zone in the second quarter of Sunday night’s pivotal AFC South battle with Tennessee, Indianapolis Colts quarterback Andrew Luck made a critical mistake.

Luck was under pressure, and rather than take a sack he tried to complete a pass over the middle. Jayon Brown was lurking, and he pounced on the ill-conceived throw by Luck, capping it off with a romp into the end zone for six.

This was a much-needed score for the Titans, who were down 14-0 before the pick-six.