No proposed rules change would improve baseball’s pace of action issue more than a pitch clock, which is why Major League Baseball officials prioritized getting a pitch clock for the 2019 season at a meeting with Players Association officials Monday. The union, which has been cool to the idea, said it would continue to discuss the issue with its players along with “smaller items” related to proposed rules changes that were presented Monday.

MLB officials did not press for any rules changes regarding defensive shifts, which means shifts are likely to remain unchanged for 2019.

Baseball prefers to introduce any rules changes in time for spring training games. Unlike with the pitch clock, owners do not have the right to unilaterally implement changes to defensive shifts in 2019.

A pitch clock would have an immediate and noticeable effect on the pace of action, as has been proven in its use in the minor leagues since 2015. In MLB games from 2008 to 2018, the average time between pitches increased from 21.7 seconds to 24.1 seconds, according to Fangraphs. Add that to an increase of 4.6 pitches per game and that produces an additional 13 minutes, 38 seconds of nothingness to the average big league game over the last 10 years.

Pace of action—not length of games—is the biggest issue facing baseball as an entertainment product. Strikeouts have increased every season in that decade, adding to the burgeoning time when a ball is not put in play. The 2018 World Series averaged 4 minutes, 26 seconds between balls in play, 40 seconds more than it took during the 1998 World Series.

This is the third season MLB officials have tried to add a pitch clock. The players association has resisted its adoption for a variety of reasons; some players “don’t want to be told what to do” when it comes to preparing for each pitch while others are concerned about penalties for violating pitch clock rules. In the minor leagues, a ball is added to the count when the pitcher is in violation of the clock. Nothing drives leverage in the batter-pitcher dynamic quite like the count.