Here's a
summary of experiments they'll be running in the Atlantic League:
1. Computers will call balls/strikes
2. Pitching rubber extended to 62 feet 6 inches from home plate
3. The distance between bases will be shortened by 3 inches (by increasing the size of the bases)
4. Infield defensive shifts restricted by requiring two fielders on either side of second
5. Infielders also will be prohibited from setting up on the outfield grass
6. Each pitcher must face at least three batters or complete the half-inning, unless injured.
7. Between inning breaks will be cut from 2 minutes, 5 seconds to 1:45.
8. Mound visits are banned, except for pitching changes or medical issues.
Plate umpires will wear earpieces and be informed of ball/strike calls by a TrackMan computer system that uses Doppler radar. Umps will have the ability to override the computer, which considers a pitch a strike when the ball bounces and then crosses the zone. TrackMan also does not evaluate check swings.