Yahoo! Sports Fantasy Football runs throughout the entire 2009 professional football regular season, which begins on Thursday, September 10 and is scheduled to end on Sunday, January 3, 2010.

Sign-ups begin in early June and continue until Friday, October 23.

If you sign-up after a Game Week is already underway, your team/league does not begin its season until the start of the following week.

However, the commissioner of a Custom League can opt to run a retroactive stats update in any league that drafts after the season has begun. Under these conditions, teams in your league can accumulate wins and losses for weeks completed prior to your league's draft.

Sorry, but retroactive scoring is not available in Public Leagues.