Tony Dungy plans to return as Colts coach but left open the possibility of retirement following a season marked by the death of his 18-year-old son. "I really don't know how I'll react the next few days," he said Monday, a day after the Colts were eliminated from the playoffs. "I think I'll be back. But it will really be the first time I've had to think about it." Dungy has been one of the NFL's most successful coaches over the past decade. He's reached the playoffs eight times, won three straight AFC South titles and taken teams to the AFC and NFC championship games. This year, he won his 100th career game less than two weeks after he turned 50.