'The previous rule changes that have been adopted by the Joint Competition Committee have had staying power and created momentum for the game. Manfred previously said the challenge system had ownership support, but he was getting more feedback at midseason on 'deploying it in a way that's acceptable to the players.' In spring training, MLB charted a total of 288 ABS Challenge use cases and 4.1 per game. On average, an ABS challenge lasted 13 seconds, MLB said Tuesday. 'The ABS Challenge System is another big step forward for the game,' Stanton said.