Below is the NFL calendar which encompasses the month of July until the start of the 2010 NFL regular season:
July 22 — Signing period ends at 4 p.m. (EDT) for unrestricted free agents who received June 1 tender.
Aug. 7 — Pro Football Hall of Fame induction ceremonies.
Aug. 8 — Pro Football Hall of Fame Game, Cincinnati vs. Dallas at Canton, OH
Aug. 12-16 — First preseason weekend.
Aug. 31 — Roster cutdown to maximum of 75 players.
Sept. 4 — Roster cutdown to maximum of 53 players.
Sept. 9 — Opening game of regular season.
Source: Associated Press