NEW YORK — Major League Baseball appears headed to its shortest season since the 1870s.

Continuing a contentious back-and-forth in a bitter dispute over pay, baseball players told the commissioner's office on Saturday night that additional talks to start the season during the coronavirus pandemic are pointless and said owners should order a return to work.

The union's action might lead to a season of about 50 games rather than the 82 initially proposed by MLB. The Major League Baseball Players Association could respond by filing a grievance that would be heard by arbitrator Mark Irvings, arguing players are owed hundreds of millions of dollars in damages due to a shorter season.

Overall, this all could spark lengthy litigation over money and a renewal of the sport's labor wars. It could even prompt some star players to sit out.

“It unfortunately appears that further dialogue with the league would be futile,” union head Tony Clark said in a statement. “It's time to get back to work. Tell us when and where.”

MLB responded with a statement accusing the union of not negotiating in good faith and cited the March agreement that called for prorated salaries but did not obligate teams to play in empty ballparks. Clubs could file a grievance claiming the union did not meet its “good faith” obligation.

“Given your continued insistence on hundreds of millions of dollars of additional pay reductions, we assume these negotiations are at an end,” union chief negotiator Bruce Meyer wrote in a letter to Deputy Commissioner Dan Halem on Saturday that was obtained by The Associated Press.

“If it is your intention to unilaterally impose a season, we again request that you inform us and our members of how many games you intend to play and when and where players should report. It is unfair to leave players and the fans hanging at this point, and further delay risks compromising health and safety. We demand that you inform us of your plans by close of business on Monday.”