 Complete the following phrase:  Singh obtained a coaching diploma from National Institute of Sports in Patiala and became a coach there. He then became head coach at the Sports Authority of India centre in New Delhi. Some of his notable coaching assignments include coach of North Zone between 1977 and 1983, head coach of Maldives in 1985 and coach of India national team from 1986 to 1987. During his tenure in Delhi, Singh survived the 