Both the players went on to win multiple super series titles as India consolidated their position on the world stage.
In August, Sindhu lost to Nozomi Okuhara of Japan in the final of 2017 BWF World Championships in three grueling games 19-21, 22-20, 20-22, which many described as one of the greatest ever in the history.
Sindhu began the match and announced herself with a 328 KPH victor to claim the first point. At the end, however, a cross-court drop shot by Sindhu was what made the difference, as Yamaguchi only managed to slide the shuttle under the net.
Before the game started, the Indian had a 2-2 head-to-head record against Chen Yufei this season and she used the opportunity to better the record in Dubai. In the match, Sindhu used her height to her advantage, playing a mix of attack and defence, coupled with tiring rallies to unsettle the young Chinese shuttler for the second time in as many months.
The Indian raced to an early lead before winning the first game 21-15.
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The 19-year-old showed tried to launch a fightback in the second game but Sindhu successfully took the control of the second game, taking a 9-5 lead.
The Japanese picked her groove up from there, which included ending a 41-shot rally with a ideal smash and went into the break with an 11-9 lead. Sindhu will take the court after this match. However, in the last game, she lagged behind with only two points and the title went to second world-seeded Yamaguchi.
In the third set, Sindhu again gained an upper hand at beginning but fell back slowly. After breaking away from a 3-3 tie, Sindhu simply surged ahead and continued to extend her lead to win the first game without much ado.
India's ace badminton player PV Sindhu missed an opportunity of creating a new history. But the former two-time world girls champion posed a fightback to make it 7-8, reducing Sindhu's lead to only one point.
At 13-13, Sindhu and Yamaguchi played an epic rally, where the Indian showed her beat defensive play and followed that up with a attractive net drop to make it 14-13.