As the days peel off the calendar toward an unofficial but implied deadline to salvage a 2020 season, the gulf between Major League Baseball and the Players' Association appears as many as 74 games wide.

Tuesday morning, some two days after its offer of a 114-game season, the union had yet received a counter-proposal from MLB in the wake of a tense conference call Sunday during which the league threatened to cut the season as short as 40 games, according to a person with direct knowledge of the negotiations.

The person spoke to USA TODAY Sports on condition of anonymity because of the sensitive nature of the talks.

The issue of pro-rated salary remains the largest sticking point, even as owners floated the concept of a 50-game season with pro-rated salaries in an ESPN report.