The Indian duo needed just 35 minutes to beat Lu Ming-Che and Tang Kai-Wei of Chinese Taipei in the semi-finals of the Super 500 tournament.
A former world no. 2, Sindhu has regained her place in the top 5 after three years. The former world champion from Hyderabad resumed her training on Monday after recovering from the injury.
Facing each other for the first time in seven months after their heated Denmark Open semifinal clash, the double Olympic medalist Indian reeled off five successive points to take the opening game.
The introduction of badminton's controversial 'skirt rule' has been postponed by a month to grant female shuttlers more time to adapt to the dress code, the game's governing body said.
Former champion PV Sindhu progressed to the women's singles second round but Lakshya Sen went down fighting to world number one Viktor Axelsen at the Singapore Open Super 750 badminton tournament in Singapore on Wednesday.
Sindhu's disappointing performances have seen her to slip to 17th in the BWF world rankings, her worst slump in a decade. Her previous highest ranking was 2nd in 2016.
Indian shuttlers P V Sindhu and Kidambi Srikanth crashed out in the group stages after losing their respective second round matches in the BWF World Tour Finals, in Bangkok, on Thursday.
This was the third title for the Indian duo -- they had clinched the Abu Dhabi Masters Super 100 and Nantes International Challenge this year.
Lakshya Sen, who won both his matches to play his part in the silver medal-winning effort in men's team event, too dropped one spot to world number 15. Kidambi Srikanth gained a spot to 20th.
Satwiksairaj and Chirag won 21-17, 21-11.
Satwik-Chirag dished out a gritty performance to outwit the local favourites a
Kiran George lost to World champion Kunlavut Vitidsarn of Thailand in the quarter-finals of the Indonesia Masters.
World no. 5 Jiang Zhen Bang and Wei Ya Xin were the first to dazzle as they beat Korea's Kim Won Ho and Jeong Na Eun 21-19, 21-18 in the mixed doubles semifinals at the KD Jadhav Indoor Hall.
It was a smooth performance from Sindhu as she was hardly tested by the Taiwanese qualifier
HS Prannoy climbed up two spots to achieve a career-best world number seven
Satwiksairaj Rankireddy and Chirag Shetty gained a place to achieve a career-best ranking
Just like in her campaign opener against Japan's Akane Yamaguchi on Wednesday, Sindhu squandered a game advantage to lose yet again in the year-ending BWF World Tour Final
World No. 15 Sindhu, who will be eyeing her third Olympic medal at the Paris Games in two months time, will face second seed and world no. 7 Wang Zhi Yi of China in the summit clash.
Indian Mithun Manjunath stunned fourth seed and world number seven Kean Yew Loh of Singapore in the opening round while PV Sindhu and Kidambi Srikanth secured straight-game wins.
Young shuttler Tanisha Crasto believes she and doubles partner Ashwini Ponnappa have the game to match the world's best.
Star Indian shuttlers Satwiksairaj Rankireddy and Chirag Shetty fought valiantly before going down to the Chinese duo of Liang Wei Keng and Wang Chang in an exciting men's doubles final of the China Masters Super 750 tournament
Satwik-Chirag pair achieves career-best world no. 2 ranking
Indian shuttler Kidambi Srikanth was pushed to the brink of exit after he suffered his second consecuitve loss in the BWF Super Series Finals, losing in straight games to Denmark's Viktor Axelsen in the men's singles in Dubai.
Sindhu had beaten world number 18 Zhang in the Malaysian Open quarter-finals in May this year but the Chinese avenged that defeat and also made the lifetime win-loss record to 3-2 against the Indian.
Srikanth, now ranked five, was placed seventh before the Malaysia Open, where he lost his last-four clash to the reigning Asian champion Kento Momota.
Fresh from their Korea Open triumph, Satwiksairaj Rankireddy and Chirag Shetty will look to continue their dream run.
Lakshya Sen went down fighting against reigning All England champion Li Shi Feng of China in the men's singles semi-finals.
Sindhu, Lakshya win openers; Sai Praneeth loses in US Open
Satwiksairaj Rankireddy and Chirag Shetty achieved a career-best world number three
P V Sindhu has been ruled out of action for the next few weeks after scans found a niggle in her left knee.
Sen has a 4-2 head-to-head record against his final opponent Li Shi Feng, the reigning All-England champion. Sen had defeated him recently at the Thailand Open.
Srikanth lost 21-23, 8-21 to Korea's Chia Hao Lee, continuing his dismal run in international circuit this season.
Ace Indian shuttler Saina Nehwal has been nominated for the Woman Player of the Year Award of the Badminton World Federation after a consistent season which saw her occupy the world number one spot for a brief period.
H S Prannoy, who won a bronze medal in the singles at the Asian Games, has decided to switch allegiance to Tamil Nadu from Kerala.
Lakshya Sen dished out a badminton masterpiece to notch up his second BWF Super 500 title with a straight-game win over Li Shi Feng of China in the final.
Both Sen and Srikanth are fighting to be inside the top 16 by April 28 next year to qualify for the Paris Olympics.
Prannoy is only seeded Indian player at No. 7 in the men's singles draw of 32 as he will begin his campaign against Loh Kean Yew of Singapore, against whom the Indian has a 4-1 win-loss record.
Prannoy registered a 21-18, 22-20 win over the world number 12 Chen
B Sumeeth Reddy and Ashwini Ponnappa, however, suffered a 21-23, 21-13, 12-21 loss against Korean pair of Song hyun Cho and Lee Jung Hyun in their mixed doubles opening round.
Verma beat his Taiwanese opponent 21-18, 21-14.