Two-time Olympic medallist PV Sindhu eked out a three-game win over world number 1 Akane Yamaguchi of Japan to make it to the semifinals of the Thailand Open Super 500 tournament, in Bangkok, on Friday.The sixth seeded Indian prevailed 21-15, 20-22, 21-13 over second seeded Japanese in 51 minutes to set up a clash with Olympic champion Chen Yu Fei of China.But specter of misfortune in semifinals kept haunting P. V. Sindhu as she faltered in the semifinals of the Thailand Open, going down in straight games to Olympic champion and World No. 4 Chen Yu Fei of China here on Saturday.Sindhu, a two-time Olympic medallist, lost 17-21, 16-21 to third seeded Chen in 43 minutes to end an impressive run in the Super 500 tournament.