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 here 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. The last time the duo played, the match was marred by controversy with Sindhu being penalised a point by the umpire for delaying tactics during the Badminton Asia Championships semifinals. Sindhu came into the match with a 13-9 head-to-head record and dished out another fine performance to notch up her 14th victory over the reigning World Champion.