Pitchers will be allotted 20 seconds between pitches with no runners on base. A clock mounted below the outfield video board at Regions Park in Hoover, Ala., will show the seconds ticking down. An umpire not on the field will operate the clock, according to the Tennessean. There will be no clock used when runners are on base.
The clock should cut down on pitchers taking lengthy delays between pitches, and it definitely will deter hitters from stepping out of the batter's box. If a pitcher takes too long, a ball will be added to the batter's count. If a batter steps out of the box within five seconds of the clock expiring, a strike will added to the count.