Hawk-Eye in tennis is a computer system that tracks the path of tennis balls during matches.
It uses multiple cameras around the court to follow the ball's movement. Hawk-Eye helps umpires make accurate line calls when players challenge decisions.
The system creates a 3D image of the ball's path on a screen. It can show if a ball was in or out by just millimeters. Hawk-Eye is used in major tournaments like Wimbledon and the US Open.
The system has made tennis fairer by reducing human error in line calls.