The second semi-final of the Dubai World Super Series Finals between India's P V Sindhu and China's Chen Yufei is now under way in Dubai. Olympic Silver Medallist Sindhu qualified for the last four stage by topping Group A by winning all her three matches in the group. Earlier in today's first semi-final, Japan's Akane Yamaguchi defeated Thailand's Ratchanok Intanon in three games 17-21, 21-12, 21-19.