Who is Naval Singh, coach accused of harassment by Neeraj Chopra & Sumit Antil?

Indian javelin coach Naval Singh, accused of harassment and verbal abuse by Neeraj Chopra and Sumit Antil, has trained other champions like Paralympic gold-medallist Navdeep Singh. Hailing from village on Delhi-Haryana border, he was into fast bowling in childhood. Naval, affiliated with Athletics Federation of India (AFI), began career as javelin thrower in 1988. He won Dronacharya Award in 2015.