His serve goes out... But the opponent makes a gesture that deserves respect !

The Australian tennis player Hewitt throws serves during a game, however, sending it over the line, at least so it seemed to the referee. His opponent, however, the American Sock, surprised everyone there.

He tells Hewitt to challenge it, through a computerized system, since the ball had gone in. Hewitt listens and infact the referee was wrong. This is gesture of great sportsmanship!