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Nick Kyrgios: Andy Murray's mum Judy joins Miami Open underarm serve row - 'He's a GENIUS' | Tennis | Sport | Express.co.uk
Why do tennis players underarm serve, is it legal and what did they say? Nick Kyrgios and Andy Murray explain shot | The US Sun
Underarm Serve In Tennis:- What Do The Top Players Think? - EssentiallySports
Underhand Tennis Serve: Rules with Serving Underhand | USTA.com
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2019: Year of the Underarm Serve (Extended Edition) - YouTube
Wimbledon 2022: Andy Murray uses underarm serve in first-round win | The Independent
Underhand Tennis Serve - Is It Legal? (Easy Rules) - My Tennis HQ
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Tennis skills: the underarm serve
