Rafael Nadal to blame for underarm serve trend, says Nick Kyrgios - Tennishead
Nick Kyrgios Underarm Serve Compilation | "Nick Kyrgios and the underarm serve" One of tennis' most talked-about stories over the past year... | By Tennis TV | Facebook
Nick Kyrgios: Andy Murray's mum Judy joins Miami Open underarm serve row - 'He's a GENIUS' | Tennis | Sport | Express.co.uk