In winning a silver medal at the World Championships, Saina Nehwal has filled a void in her achievements. Though she would have loved to return with the gold, nevertheless it is a historic feat for Indian badminton. She became the first from the country to win a silver medal on one of the biggest stages. Runner-up Saina Nehwal (left) poses with her silver medal next to World No. 1 Carolina Marin in Jakarta Before Saina’s…