Five minutes into the second quarter of the AFC Championship, Colts linebacker D'Qwell Jackson picked off Tom Brady on a pass intended for Rob Gronkowski. On the field, the turnover gave Indianapolis a chance to keep the score close; at that point, the Colts were already down 14-0 and were deep in Indy territory when Jackson got the pick.
On the sidelines, the ball, which Jackson held onto as a memento, became the catalyst for the months-long saga known as Deflategate, after a Colts equipment manager measured the ball's pressure and told team officials.