P. V Sindhu lost to world no 2 Akane Yamaguchi of Japan in the women's singles summit clash of the BWF Super series Final on Sunday. In the season - ending tournament finale , world no 3 Sindhu played her heart out before losing 21-15 , 12-21 , 19- 21 to Yamaguchi in an energy sapping clash that lasted an hour and 31 minutes. The 22 - year old finished runner - up once again in her third major tournament , following last year's Rio Olympic and this year's Glasgow World Championship. In scenes similar to the Glasgow World Championship final in August , the final went down to the wire , playing in her season's fourth final , Sindhu led 10-8 before entering the break with a three point lead. after the interval , Sindhu moved to 13-8. Yamaguchi narrowed the lead to 13-14.Sindhu opened up a five point lead to pocket the first game in 23 minutes. In the second , Sindhu zoomed to a 5-0 lead and then 6-2, Yamaguchi made it 7-8, opening up a 10-8 lead after winning an exhausing rally , entering the break ahead by two points. The Japanese consolidated the lead to 15-11 and claimed the claimed the second game easily . In the decider , Sindhu opened up a 4-0 lead , winning a 51 -shot rally , but couldn't prevent Yamaguchi from squaring it at 5-5. Sindhu maintained a 8-6 advantage but her opponent kept coming back. At 15-15 , the lead exchanged hands. The fierce battle continued till Yamaguchi's prompt return put her ahead 19-18. The Indian netted twice to hand the title to Yamaguchi.