82 games in the regular season
It is technically possible for three teams in one conference to have perfect seasons.
There are 82 games in the regular season. The two conferences, Eastern and Western, determine ultimately who will play in the Finals. During the regular season, each team plays the majority of their games against their own conference with a large fraction being against teams in their own division. There are three divisions per conference. At the end of the regular season, the top 8 teams from each conference get into the playoffs, and will play the other teams in the conference to make it to the Finals against the opposite conference's top team.
Their regular season record in 2007 was 10-6
The UNLV Men's Basketball team won the national title in the 1989-90 season. They finished the season with a 35-5 record, including a 16-2 conference record.
The Ivy League also sends the regular season champion, as the conference has no tournament to end the season.
The Cowboys 2007 regular season record was 13-3.
In 2004, the Steelers had a 15-1 regular season record.
Their regular season record for the 2009-2010 football season was 13-3.
The Eagles regular season record in 2004 was 13-3. They won the Conference championship and then lost in the Super Bowl to the Patriots giving them a composite record for 2004 of 15-4.