How do challenges work in tennis and what are the rules and procedures involved?

Answer 1

In tennis, challenges are used to review close or disputed calls made by the officials. Players can challenge a call by using a limited number of challenges per set. To challenge a call, a player must make a clear and immediate request, usually by raising their hand or using a specific gesture. The challenge is then reviewed using technology such as Hawk-Eye, which provides a computer-generated replay of the ball's trajectory. If the challenge is successful, the player retains their challenge and the point is replayed. If the challenge is unsuccessful, the player loses the challenge and the original call stands. It's important for players to use their challenges strategically, as they have a limited number available.