Jason Kelce and Tom Brady were among those to express their surprise over Khalen Saunders's jaw-dropping speed.

Khalen Saunders intercepted his old quarterback Patrick Mahomes, then showed off rare athleticism on the big return:

He may be a defensive tackle now, but Khalen Saunders went back to his high school roots on "Monday Night Football."  Saunders, who played running back in high school, put that experience to use when he picked intercepted Patrick Mahomes' pass in the end zone before scampering 37 yards downfield late in the third quarter.