TBA Opening day, active rosters reduced to 26 players.June 3-4 Owners meeting Yu Darvish Jersey, New York.June 10-12 Amateur draft, Omaha, Neb. June 13-14 Chicago Cubs St. Louis at London.June 15 International amateur signing period closes.July 2 International amateur signing period opens.July 10 Deadline for drafted players to sign, except for players who have exhausted college eligibility.July 14 All-Star Game at Los Angeles.July 26 Hall of Fame induction, Cooperstown, N.Y.July 31 Last day during the season to trade a player.Aug. 13 New York Yankees Chicago White Sox at Dyersville, Iowa.Aug. 23 Boston Baltimore at Williamsport, Pa.Aug. 31 Last day to be contracted to an organization and be eligible for postseason roster.Sept. 1 Active rosters expand to 28 players.Sept. 29-30 Wild-card games.Oct. 20 World Series starts.October TBA Trading resumes, day after World Series.November TBA Deadline for teams to make qualifying offers to their eligible former players who became free agents, fifth day after World Series.November TBA Deadline for free agents to accept qualifying offers Dillon Maples Jersey, 15th day after World Series.Dec. 2 Last day for teams to offer 2021 contracts to unsigned players on their 40-man rosters.Dec. 6 Hall of Fame Golden Days Era committee vote announced, Dallas.Dec. 7-10 Winter meetings, Dallas.