Baseball ushers in high-tech replay review system for calling balls and strikes - NBC News

1. Baseball ushers in high-tech replay review system for calling balls and strikes  NBC News
2. How does ABS work? What automated ball-strike rule means for MLB  ESPN
3. ABS is here, so what reason do MLB managers have left to kick dirt on umpires?  The New York Times
4. Robot strike zone will create winners and losers among pitchers, batters who earned human calls  AP News
5. 'Robot umps'? See how MLB's new ABS challenge system works  USA Today

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