So much has been written in recent times about Dronacharya Award-winning Badminton coach Pullela Gopichand that readers may question the necessity of presenting a profile in this series of the mentor whose Badminton nursery catapulted Saina Nehwal and Kidambi Srikanth to the giddy heights of the World No 1 position, and PV Sindhu to the World Championship gold medal. Every Indian Badminton enthusiast is also aware that Gopi (as he is known to all and sundry) is one of only two players –