The Seattle Seahawks and Indianapolis Colts have advanced to the quarter-finals of the U.S. National Football League playoffs.

Seattle came from seven points down in the fourth quarter to win a thrilling 21-20 contest Saturday against Dallas. The visiting Cowboys appeared set to win the game with a short field goal with little more than a minute remaining. But the ball was fumbled before the kicker could reach it, and the Seahawks escaped with the one-point victory.

Seattle next faces either the Chicago Bears or New Orleans Saints in a National Conference playoff game.

Earlier Saturday, the Indianapolis Colts defeated the Kansas City Chiefs, 23-8. Kicker Adam Vinatieri had three field goals, and quarterback Peyton Manning threw a five-yard touchdown pass in the fourth quarter to lead the Colts.

Indianapolis next takes on the Baltimore Ravens in an American Conference playoff contest.

In Sunday's wild-card round games, the New York Jets take on the New England Patriots, and the New York Giants face the Philadelphia Eagles.

Some information for this report provided by AP, AFP and Reuters.