When Ratchanok Intanon secured the BWF World Junior title in 2009, she was just 14-years-old and the youngest ever winner.
A year later the Thai youngster defended her title in Mexico and then became the only person to win the prize three years in a row when she triumphed in 2011.
Ratchanok became the youngest ever women's singles winner of BWF World Championships in August, 2013.