New Delhi, Aug. 24 -- Pullela Gopichand is not known to show his emotions. The chief national coach usually keeps his composure and merely pumps his fists when his ward wins a tournament.

On Friday, though, as two of his proteges-PV Sindhu and B Sai Praneeth-made history at the World Championships, beating reigning Asian Games champions to enter their respective semi-finals and assuring themselves of medals in Basel, there was an outpouring of emotions.

With Chinese-Taipei's Tai Tzu Ying's final shot going wide, Sindhu fell to the floor in sheer delight. Gopi raised his hands, let out a loud "yay" with one of the biggest grins ever seen on his sombre face.

Less than an hour later, the former All England champion was flashing a huge smile...