Major League Baseball has made its first labor proposal since locking out players December 2, focusing on a narrow set of issues that did little to satisfy players and increased the likelihood of spring training being postponed, according to sources.

It was the sides' first meeting that discussed core economic issues in 43 days.

Per sources, the league proposed changes to the arbitration system for players with two-plus years of service, tweaked its proposed draft lottery and offered the ability for teams to earn draft picks if top prospects find early success in the major leagues.