| Key Dates | |
| Date | Event |
| May 30, 2013 | Start of closed period -- First-Year Player Draft |
| June 1, 2013 | XX(B) "Retention Bonus" player may require release if not added to 25-man roster |
| June 6-8, 2013 | First-Year Player Draft |
| June 15, 2013 | End of 2012-13 international signing period |
| June 16, 2013 | First date clubs may trade a XX(B) player without his consent |
| June 21, 2013 | Release of the 2013-14 signing period registration list |
| June 16, 2013 | First date clubs may trade a XX(B) player without his consent |
| Jul 2, 2013 | Beginning of 2013-14 international signing period |
| Jul 7-10, 2013 | All-Star Game Final Vote |
| July 12-16, 2013 | Major League Baseball All-Star FanFest (Javits Center) |
| July 14, 2013 | Taco Bell All-Star Sunday at Citi Field |
| July 15, 2013 | All-Star Workout Day at Citi Field featuring the Home Run Derby |
| July 16, 2013 | 84th MLB All-Star Game at Citi Field |
| July 17, 2013 | Competitive Balance Lottery |
| July 28, 2013 | Baseball Hall of Fame induction ceremonies |
| July 31, 2013 | Non-waiver Trade Deadline |
| August 1, 2013 | New waiver period begins |
| August 15, 2013 | Last date to select player to avoid Draft-excluded status |
| August 24, 2013 | Civil Rights Game, U.S. Cellular Field, Chicago |
| August 29, 2013 | Unconditional release waivers must be requested |
| August 31, 2013 | Waiver Trade Deadline |
| September 1, 2013 | MLB rosters expand to maximum of 40 players |
| September 29, 2013 | Final day of regular season |
| October 1, 2013 | Postseason begins |
| September 30-October 15, 2013 | Article XX(D) free agency period |
| October 23, 2013 | World Series begins |
| Right after WS | Eligible XX(B) players become free agents |
| 4th day after | Last date to request waivers |
| 5th day after |
Last date to reinstate players Last date to outright potential Minor League free agent Last date for former club to tender qualifying offer Minor League players become free agents |
| 6th day after | XX(B) and Minor League free agents may sign |
| 12th day after | Last date for XX(B) players to accept qualifying offe |
| TBD | GM/Owners Meetings |
| November 10, 2013 | Outright waivers secured |
| November 11, 2013 | New waiver period begins |
| November 18, 2013 | Last date to ask outright waivers on an injured player |
| November 20, 2013 | Last date to outright an injured player to the Minor Leagues |
| December 2, 2013 | Tender deadline |
| December 5, 2013 | Last date to request outright waivers |
| December 9, 2013 | Last date to outright a player prior to Rule 5 Draft |
| December 9-12, 2013 | Winter Meetings |
| December 9-12, 2013 | GIBBY (Greatness in Baseball Yearly) Awards |
| December 12, 2013 | Rule 5 Draft |
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