Robo-umps came to Class AAA. The Nationals' views on them were mixed.

MLB experimented with the ABS system in Class AAA, using robo-umps for three games a week.
Pitchers and hitters agree that the strike zone with robo-umps is significantly smaller.
The use of robo-umps in Class AAA shows the seriousness with which the ABS system is being considered.

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