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For tennis ball machines to shoot balls with perfect accuracy and at nearly 100 miles per hour, it takes a series of carefully calibrated parts working together. Here's what it looks like inside.
"He's like, 'He's got to shoot that, man. That shot's right there.' And I'm like, 'Kobe, not everybody sees that. Not everybody sees that.' The ball swings to the other side. 'Come on, man,' he ...