New Delhi, March 27 -- India's star shuttler PV Sindhu penned an emotional tribute to Carolina Marin following the Spaniard's retirement from professional badminton, saying the sport "will miss" one of its fiercest competitors.

Taking to Instagram, Sindhu reflected on her long-standing rivalry and friendship with the Rio Olympics gold medallist, recalling their journey from teenage competitors to seasoned rivals on the global stage.

"Some rivals become part of your journey forever. Carolina was one of them. We first played each other when we were 15 or 16 year old girls in the Maldives, and from then on we went on to share so many battles. To be honest, you were also a complete pain on court. The constant shouting, the intensity, the li...