Pro-Football-Reference.com is a website providing a variety of statistics for American football. It is one of the only sites that provides information on both active and retired players. The site provides statistics for teams dating back to the pre-Super Bowl days. It has statistics for quarterbacks, running backs, receivers, kickers, returners, and punters, as well as some defensive statistics, and Pro Bowl rosters. It also has each teams' game-by-game results.