In Hopman Cup tennis tournament Tuesday, January 5, 2016 in Perth, Australia, the American tennis player Jack Sock gave the example of fair play. During the match against Lleyton Hewitt, the Australian made an ACE but the referee showed foul.

In a sign of fair play the Sock cried with smile: 'He was inside, If you wish to claim!” causing surprise and laughter from the opposing player and spectators. Then, repeated insisting: 'Claim it!”. End, the opponent will follow the advice of making plea to check phase with the 3D video. The Hewitt won the match 6-4 7-5.