Saturday - Last day to trade a player without securing waivers.
Aug. 11-12 - Owners meetings, Minneapolis.
Aug. 16 - Last day to sign selections from 2010 amateur draft who have not exhausted college eligibility.
Sept. 1 - Active rosters expand to 40 players.
Oct. 6 - Playoffs begin.
Oct. 27 - World Series begins, city of National League champion.
November - Free agent filing period, first 15 days after World Series ends.
Dec. 1 - Last day for teams to offer salary arbitration to their former players who became free agents.
Dec. 7 - Last day for free agents offered salary arbitration to accept the offers.
Dec. 6-9 - Winter meetings, Lake Buena Vista
Dec. 12 - Last day for teams to offer 2011 contracts to unsigned players.