Rob Manfred received support last month from baseball's competition committee as he attempts to put something in place to limit defensive shifts.
Manfred made it clear when he took over as commissioner five years ago that he didn't like shifts.
Since then, shifts have only increased and batters have not adjusted. Any rule change would have to be approved by the players' union.
"To this point, there truly hasn't been a definitive position taken on the 'shift/no shift' issue from among the player group," union head Tony Clark said. "But players thus far have been willing to talk about it as part of a much broader conversation."