MLB December 1, 2021 12:52 pm MLB Lockout Begins After CBA Negotiations Stall Major League Baseball’s collective bargaining agreement expired on December 1 at 11:59 p.m. ET. With no agreement met, the league entered a work stoppage. US & World Videos 2:10 Celtics crush Heat in Game 5 to advance in NBA playoffs 0:40 Top Pirates prospect Paul Skenes dominating the minors. When will he make his MLB debut? 0:59 2024 NHL Draft Lottery: Date, odds, top prospects 1:58 Bruins fans disappointed by overtime loss in Game 5 2:38 Biggest offseason questions surrounding Lakers, Suns, Pelicans