Aug 27 - Clubs must reduce rosters to a maximum of 75 players on Active List prior to 4:00 p.m., New York time.
Aug 31 - Roster cut-down to maximum of 53 players on Active/Inactive List prior to 9:00 p.m., New York time. Clubs may dress minimum of 43 and maximum of 46 players for each regular season and postseason game.
Sept 1 - Claiming period for players placed on waivers at the final roster reduction will expire at 12:00 noon, New York time.
Sept 1 - Beginning at 12:00 noon, New York time, clubs may establish a Practice Squad of eight players by signing free agents who do not have an accrued season of free agency credit or who were on the 46-player Active List for less than nine regular season games during each of any Accrued Seasons. A player cannot participate on the Practice Squad for more than three seasons.
Sept 4 - Deadline at 4:00 p.m., New York time, for all NFL Player Contracts, Practice Player Contracts, tender offers, and miscellaneous amounts to fit within each club’s 2012 Salary Cap, in anticipation of the midnight expiration of the Top 51 Rule.
Sept 5 - At 12:00 a.m., New York time, the Top 51 Rule expires for all NFL Clubs.
Sept 5 - Deadline for Clubs to submit written request to receive up to $1.5 million in additional Salary Cap Room for the 2012 League Year, in accordance with CBA Article 11, Section 5(e)(ii).