The Rule 5 draft is a Major League Baseball (MLB) player draft that occurs each year in December, at the annual Winter Meeting of general managers. The Rule 5 draft aims to prevent teams from stockpiling too many young players on their minor league affiliate teams when other organizations would be willing to have them play in the major leagues. The Rule 5 draft is named for its place in The Official Professional Baseball Rules Book. The Rule 4 draft—more widely known as the "first-year player draft", "amateur draft", or simply the "MLB draft"—is a distinctly different process by which teams select high school and college players, and takes place annually in July.

The 2021–22 Major League Baseball lockout was the ninth work stoppage in Major League Baseball (MLB) history. It began at 12:01 a.m. EST on December 2, 2021, after MLB owners voted unanimously to enact a lockout upon the expiration of the 2016 collective bargaining agreement (CBA) between the league and the Major League Baseball Players Association (MLBPA). It ended on March 10, 2022, with the signing of a new agreement. Issues raised between the league and union involved compensation for young players and limitations on tanking to receive higher selections in the MLB draft.