India, Aug. 25 -- As PV Sindhu arrived on the court to face Chen Yufei of China in world championships semi-final on Saturday, Danish badminton legend Morten Frost, doing TV commentary, said: "Sindhu has very good retrieving skills, runs hard on court and is very good while attacking-when all of these combine she is at her best."

The observation was spot on as the Indian fifth seed, then warming up to take on the world No 3 at the St. Jakobshalle arena in Basel, combined all her resources to produce her best and crush Chen.

In a repeat of the 2017 World Championships semi-final, where Sindhu beat Chen in straight games at Glasgow, the world No 5 tore into the reigning All England champion, winning 21-7, 21-14 in 40 minutes to enter her ...