Starting next season, MLB players will be able to challenge balls and strikes a few times per game.

A vote on Tuesday approved the Automated Ball-Strike (ABS) Challenge System , which had been tested in the minor leagues, at spring training and during this summer’s MLB All-Star Game.

The rule change will grant teams two challenges per game, with the reviews using cameras to determine whether the ball or strike in question was called correctly by the home plate umpire.

Only a batter, pitcher or catcher can initiate a challenge with a tap of his hat or helmet. Help from the dugouts will not be permitted.

Teams that have run out of challenges will be granted another to begin extra innings.

“The previous rule changes that have been adopted by the Joint Competition Committee have had

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