Newsbeat looks at how Milos Raonic's powerful serve stacks up against the speeds achieved in other sports.
Chris Bruil says it is 'ridiculous' he cannot accompany Scottish Olympian Kirsty Gilmour to Rio because of accreditation issues.
Chris and Gabby Adcock are the leading medal hopefuls in Britain's badminton squad for this summer's Rio Olympics.
Kirsty Gilmour believes an Olympic medal is a realistic aim after being chosen for Team GB heading for Rio.
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The badminton school behind Brazil's Olympic badminton team