This season the New England Patriots have faced a number of mobile quarterbacks. Some were small (Tyrod Taylor), some were big (Ben Roethlisberger), some were Supermen (Cam Newton) and some were Saints (Drew Brees).
Now, in the divisional round of the playoffs, they'll face another in the Tennessee Titans' Marcus Mariota. He doesn't have the same Hall of Fame presence as Brees, but that doesn't mean the Patriots aren't worried.
"He actually knows when to run and when to pass the ball when scrambling," Patriots defensive back Duron Harmon told reporters in trying to explain what separates Mariota from other mobile QBs.