According to the Associated Press, Major League Baseball is seeking to increase the DL and option time minimums for players.
MLB shifted from a 15-day disabled list to a 10-day disabled list in 2016, as part of baseball's new labor contract, but the league now wants to move it back to 15 after watching teams game the system, particularly in rotating middle relievers and back-end starters. Major League Baseball also wants to require players who are optioned to the minor leagues to remain there for 15 days, rather than the current 10. Per the Associated Press report: "Talks are ongoing and are expected to extend to the eve of spring training, if not beyond."