Baseball calendar: April 4 — Opening day, New York Yankees at Boston
Feb. 11-19 — Salary arbitration hearings, St. Petersburg, Fla.
Feb. 18 — Voluntary reporting date for pitchers, catchers and injured players.
Feb. 23 — Voluntary reporting date for other players.
March 2 — Mandatory reporting date.
March 2-11 — Teams may renew contracts of unsigned players.
March 17— Last day to place a player on unconditional release waivers and pay 30 days termination pay instead of 45 days.
March 31 — Last day to request unconditional release waivers on a player without having to pay his full 2010 salary.
April 4 — Opening day, New York Yankees at Boston, active rosters reduced to 25 players.
June 7-9 — Amateur draft, Secaucus, N.J.
July 13 — All-Star game, Anaheim, Calif.
July 25 — Hall of Fame inductions, Cooperstown, N.Y.
July 31 — Last day to trade a player without securing waivers.
Aug. 15 — Last day to sign selections from 2010 amateur draft who have not exhausted college eligibility.
Sept. 1 — Active rosters expand to 40 players.
November — Free agent filing period, first 15 days after World Series ends.
Dec. 6-9 — Winter meetings, Lake Buena Vista, Fla.
Dec. 12 — Last day for teams to offer 2011 contracts to unsigned players.