The first stage of the International Shooting Sport Federation (ISSF) World Cup Series is being held in New Delhi from today. Olympic bronze-medallist Gagan Narang, Olympians Jeetu Rai, Heena Sidhu and Kynan Chenai, are spearheading the Indian challenge in the tournament.The series is slated to take place in 5 stages in five different countries. Besides India, Mexico, Cyprus, Germany and Azerbaijan will play the host to the other four stages. Over 450 athletes, representing 50 National Olympic Committees, are taking part in the competition. The ISSF World Cup Final will also be held in New Delhi at the end of the season.