PORT ST. LUCIE, Fla. (AP) — New baseball Commissioner Rob Manfred says it is too early to draw conclusions about baseball’s latest attempt to speed the pace of games.

Baseball is requiring batters to keep one foot in the batter’s box in many instances and installed clocks to count down the time between innings and during pitching changes. The penalties are warnings and fines, which will start May 1.

After speaking Monday with New York Mets players, Manfred said: “I think they understand what it is we’re trying to accomplish. I think they appreciate the fact we’ve taken kind of a measured approach to the problem to make sure we don’t unintentionally change the game in a way that may not be positive.”