How do line challenges work in tennis? is there a website that will explain/demonstrate it?

Answers:

I want to initiate my daughter into tennis in the near future. What are the steps I should take? entry age?

A player in a US Open series/ US Open tournament (NOT including qualifying rounds) gets 2 challenges per set. The screen then shows the audience the call; if the player is right, they keep their challenge. If they lose, they lose that challenge. Hawkeye is the program that simulates the challenges, if you google them you will probably find a demo of it somewhere.

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Is Bollettieri Tennis Academy worth the price?

Please see the following URL explaining the new challenge rules.

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