Eric Decker's two left feet inadvertently cost his team a touchdown.
Decker tripped over his feet on a wide open run to the endzone.
So instead of the game Broncos only trailing 10-7, they still sat at 10-0. Not for very long though, as Peyton Manning's next pass was intercepted by Quentin Jammer and returned a shade over 80 yards for a touchdown.
So, to recap the 14 point swing. Chargers lead 10-0. Eric Decker trips over feet, Broncos don't score. Chargers score quickly again and now lead 17-0.