Feb. 1-21, 2010
Salary arbitration hearings
Feb. 2-8, 2010
Caribbean Series
Feb. 17-18, 2010
Pitchers and catchers begin reporting to Spring Training.
Feb. 23, 2010
All other players begin reporting to Spring Training.
 
March 2, 2010
Mandatory Spring Training reporting date for all players.
March 2-11, 2010
Teams may renew contracts of unsigned players.
March 17, 2010
Last day to place a player on unconditional release waivers & pay 30 days termination pay instead of 45 days.
March 31, 2010
Last day to request unconditional release waivers on a player without having to pay his full 2010 salary.
 
April 4, 2010
Opening Day
Active player limit reduced to 25 players.
 
June 7-9, 2010
First-Year Player Draft, Seacaucus, N.J.
 
July 12, 2010
Home Run Derby, Angel Stadium, Anaheim, Calif.
July 13, 2010
All-Star Game, Angel Stadium, Anaheim, Calif.
July 25, 2010
Hall of Fame inductions, Cooperstown, N.Y.
July 31, 2010
Non-waiver trade deadline
 
Aug. 15, 2010
Last day to sign selections from 2010 First-Year Player Draft who have not exhausted college eligibility.
Aug. 31, 2010
Postseason eligibility lists are established.
 
Sept. 1, 2010
Active player limit expands from 25 to 40 players.
 
October 2010
Postseason begins, dates TBD.
 
November 2010
Free agent filing period, first 15 days after World Series ends.
 
Dec. 6-9, 2010
Winter Meetings, Lake Buena Vista, Fla.
Dec. 12, 2010
Last day for teams to tender 2011 contracts to unsigned players.