Answer based on context:

After starting 0-13 and looking most likely to become the second team in NFL history to go 0-16 after the 2008 Detroit Lions, the Colts would finally win a game. Having a career day, Donald Brown and a strong defense would deny Tennessee any hope of a win as the team improved to 1-13, allowing them to avoid becoming the third team in NFL history to finish a season winless, after the 2008 Detroit Lions and the 1976 Tampa Bay Buccaneers.

How many teams finished a winless season?
2