Defending champion Saina Nehwal has stromed into the semi-final of the India Open Super Series Badminton tournament .Saina defeated 5th seed Sung Ji Hyun of Korea 19-21, 21-14, 21-19 in a quarter-final match in New Delhi today. However, Japanese combo of Naoko Fukuman and Kurumi Yona defeated India's Mohita Sahdev and Sanjana Santosh 21-8, 21-2 in women's doubles quarter-final . Later today, two-time World Championship bronze medallist PV Sindhu will be seen in action against Korea's Bae Yeon Ju in another women's singles quarter final .