Key MLB offseason dates: When does free agency start? What else will happen before potential lockout?

MLB's offseason calendar includes several key dates leading up to a potential lockout, with free agency set to begin following the expiration of the collective bargaining agreement. The coming weeks will feature important milestones on the baseball calendar, including roster moves and free agent transactions. A work stoppage remains a looming possibility if a new CBA is not reached between owners and the players' union.