Aussie Nick Kyrgios might be a feisty character on the court, but he's proven to be quite the sportsman in his match against Tomas Berdych in Dubai on Thursday.
Perhaps paying it forward from Lleyton Hewitt's good fortune in January's Hopman Cup, Kyrgios utters the words "challenge, challenge, challenge" to his opponent whose ball has just been called out, who obliged by going to a video replay of the shot.
Fancy that. Kyrgios was right too, by the way.
