New Delhi, May 6 -- U. Vimal Kumar has not visited the Prakash Padukone Badminton Academy (PPBA) on the outskirts of Bengaluru since the lockdown began on March 24. His most promising trainee, world No 27 Lakshya Sen, 18, lives in an apartment near the academy with his father, who is also a coach at PPBA. Kumar is the director at the famed academy....