Olympic silver medallist P V Sindhu has finished as runner-up at the Dubai World Super Series Badminton Final. In an energy-sapping summit clash in Dubai today, she lost to World No. 2 Akane Yamaguchi of Japan in three games 21-15, 12-21, 19-21. The match lasted an hour and 31 minutes. It was Sindhu's third loss in a major final, following her narrow defeats at the Rio Olympics and Glasgow World Championship.Sindhu, who had defeated Yamaguchi on Friday in the last group match, failed to outlast the diminutive Japanese, who showed better precision and athleticism to clinch the title.The 22-year-old Indian was playing her fourth Super Series final of the year. Sindhu had won two super series titles at India Open and Korea Open, besides reaching the finals at Hong Kong Open and World Championship this year.