Badminton Unlimited | The new fixed height service rule | BWF 2018 - YouTube
Badminton - Wikipedia
Victoria Cope on Twitter: "New #Badminton rule from March 2018 for all international tournaments and league adoption to follow #Badmintonrally 🏸❤️ https://t.co/ZvAYYk9OCk" / Twitter
EXPLAINED: The new spin serve in badminton that has shuttlers in a tizzy | Sports News,The Indian Express