A busy day of conference championship games is headlined by a rematch between No. 2 Notre Dame vs. No. 3 Clemson in the ACC. In the Big Ten, many believe Ohio State needs a convincing win over Northwestern to secure a playoff spot. Plus, NFL teams continue to battle in a wide-open playoff race, particularly in the ultra-tight NFC East. And college basketball's top team, Gonzaga, takes on No. 3 Iowa.