Sept. 30 – NL wild card series start.
Oct. 5 – AL Division Series start, Los Angeles and San Diego.
Oct. 6 – NL Division Series start, Arlington, Texas, and Houston.
Oct. 11 – AL Championship Series starts, San Diego.
Oct. 12 – NL Championship Series starts, Arlington, Texas.
Oct. 15 – International amateur signing period closes, 5 p.m. EDT
Oct. 20 – World Series starts, Arlington, Texas.
October TBA – Trading resumes, day after World Series.
Nov. 2 – BBWAA awards finalists announced.
November TBA – Deadline for teams to make qualifying offers to their eligible former players who became free agents, fifth day after World Series.
Nov. 9 – Rookies of the Year announced.
Nov. 10 – Managers of the Year announced.
Nov. 11 – Cy Young Awards announced.
Nov. 12 – Most Valuable Players announced
November TBA – Deadline for free agents to accept qualifying offers, 15th day after World Series.
Dec. 2 – Last day for teams to offer 2021 contracts to unsigned players on their 40-man rosters.
Dec. 7-10 – Winter meetings, Dallas.
Jan. 15 – International amateur signing period opens.
Feb. 1-19 – Salary arbitration hearings, Scottsdale, Ariz.
Feb. 17 – Voluntary reporting date for pitchers, catchers and injured players.
Feb. 22 – Voluntary reporting date for other players.
Feb. 27 – Mandatory reporting date.
March 15 – Last day to place a player on waivers for 30 days termination pay.
March 27 – Last day to offer a retention bonus to an eligible player attending spring training with a minor league contract.
March 30 – Last day to place a player on waivers for 45 days termination pay.
April 1 – Opening day, active rosters reduced to 26 players.
July 13 – All-Star Game, Atlanta.
July 25 – Hall of Fame induction, Cooperstown, N.Y.
Dec. 1 – Collective bargaining agreement expires, 11:59 p.m. EST.
Dec. 15 – International amateur signing period closes.
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