Replay great for game, but data shows it won't be needed much

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Some things will change with the new challenge system, which will make a rookie out of even veteran managers like Bruce Bochy.

Some things will change with the new challenge system, which will make a rookie out of even veteran managers like Bruce Bochy.

Alas, the beginning of an era may be the end of another. The old-time, dirt-kicking, hat-tossing, expletive-flying argument between a manager and umpire will become more rare. You still may get a few of them when it comes to balls and strikes. But now managers have a recourse that, while less colorful, actually can affect change. Isn't technology amazing?