Sourabh will next face Korea's Heo Kwang Hee for a place in the men's singles final.
After losing the first game, the 24-year-old Indian rebounded strongly to clinch a 15-21, 21-13, 21-13 win over Wan Ho in a gruelling second-round clash that lasted almost an hour.
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.
Lakshya Sen and Saina Nehwal made impressive starts at the Indonesia Masters Super 500 badminton tournament, advancing to the second round of men's and women's singles respectively with contrasting victories in Jakarta on Wednesday.
The Chirag-Satwik pair won the Thailand Open in May to reclaim the No.1 ranking but suffered loss of form and made a first-round exit from the Singapore Open last month.
If Saina manages to go past Okuhara, the Indian might run into fourth seed Carolina Marin, who is placed in her half of the draw.
Former world No. 1 Kidambi Srikanth's wretched run continued as he went down 6-21, 17-21 to fellow-Indian Ajay Jayaram, diminishing his hopes of qualifying for the Tokyo Games.
Prime Minister Narendra Modi and cricket icon Sachin Tendulkar, among others, lavished praise on Kidami Srikanth for claiming the Australian Open title with a stunning win over reigning Olympic and world champion Chen Long.
A summary of sports events and persons who made news on Thursday
Kashyap, a Commonwealth Games champion, was trailing 8-14 in the third game when he chose to retire after pulling his calf muscle.
Summary of sports events and persons who made news on Wednesday
Kidambi Srikanth is against any drastic changes in the scoring system being contemplated by the world body.
Satwik-Chirag had lost each of the two semifinals in straight sets and their aim would be to go the distance in the upcoming tournament.
On Wednesday, Commonwealth Games bronze medallists Ashwini Ponnappa and N Sikki Reddy, seeded eighth, scraped past the Denmark duo of Amalie Magelund and Freja Ravn 21-9, 17-21, 21-19 in the women's doubles.
Kidambi Srikanth entered the final of the $120,000 Swiss Grand Prix Gold badminton championship after he got the better of compatriot Ajay Jayaram in an all-India last-four clash in Basel on Saturday.
Kidambi Srikanth might be inching towards the coveted World No 1 ranking after his record-equalling Super Series win in Paris but he says he does not want to lose sleep over chasing it.
Besides Srikanth, the other players withdrawn are Ashwini Ponnappa, Ritika Rahul Thkar, Treesa Jolly, Mithun Manjunath, Simran Aman Singh and Khushi Gupta.
H S Prannoy stunned World No 10 Kanta Tsuneyama while ace Indian women shuttlers PV Sindhu and Saina Nehwal also sailed into the second round of the Malaysia Masters, in Kuala Lumpur, on Wednesday. World Championships bronze-medallist B Sai Praneeth and the seasoned Kidambi Srikanth, though, bowed out of the men's singles events.
Sindhu, a 2019 World Champion, lost 14-21, 21-15, 14-21 to Zhang in a match that lasted 55 minutes.
HS Prannoy climbed up two spots to achieve a career-best world number seven
Indian women's doubles pair of Treesa Jolly and Gayatri and Gayatri Gopichand also improved two spots to the 17th position.
Summary of sports events and persons who made news on Wednesday
Indonesian coach Agus Dwi Santoso has been roped in to guide the singles players -- both men and women -- ahead of Tokyo Olympics. Badminton Association of India (BAI) secretary, Ajay Singhania said the visa process has started and Santoso is likely to join the Indian team in the mid of next month.
Kidambi Srikanth's experience at the Thailand tour has been far from pleasant
P V Sindhu made a positive start to her campaign in women's singles but Kidambi Srikanth suffered a straight game loss on the opening day of the $ 1 million Dubai Super Series Final, in Dubai on Wednesday.
Indian shuttlers had a mixed day in the opening round of the China Open with Saina Nehwal and PV Sindhu easing into Round II, while Kidambi Srikanth and Ajay Jayaram making early exits.
P V Sindhu and K Srikanth have been given the top billing in the respective women's and men's singles badminton competitions of the Commonwealth Games
Fifth seed Sindhu will now look to avenge her All England loss against Korea's Sung Ji Hyun, whom she faces next, while Srikanth will meet Thailand's Khosit Phetpradab on Thursday.
P V Sindhu beat world No.12 Busanan 21-17, 21-13 in the women's singles opener, while Kidambi Srikanth demolished Sitthikom Thammasin 21-11, 21-11 in 37 minutes in the men's singles.
India's leading shuttlers Saina Nehwal and Kidambi Srikanth advanced to the second round of the French Open with straight-game wins, but it was curtains for Sameer Verma at the US $750,000 BWF event, in Paris, on Wednesday.
However, four of her compatriots, including double Olympic medallist P V Sindhu and World Championships silver winner Kidambi Srikanth, progressed to the quarterfinals of their respective events.
The World No 11 Srikanth will take on China's Lu Guang Zu in the next round.
Star Indian shuttlers PV Sindhu and Kidambi Srikanth will look to arrest their slump in form when they begin their campaign at the Australia Open badminton tournament in Sydney on Tuesday.
Fresh from their Korea Open triumph, Satwiksairaj Rankireddy and Chirag Shetty will look to continue their dream run.
Earlier, the women's doubles pair of Ashwini Ponnappa and N Sikki Reddy suffered their second successive loss in the event, going down fighting 19-21, 20-22 to Bulgaria's Gabriela Stoeva and Stefani Stoeva to bow out of contention.
Lakshya Sen moved a place to world number 17, despite not competing in the last two weeks.
Srikanth was to play against Momota in the first round on Wednesday but the Japanese world number one pulled out of the tournament on Tuesday
Olympic medallist PV Sindhu and Kidambi Srikanth crashed out in the quarter-finals of the French Open after suffering straight-game defeats in their respective matches as India's campaign ended in the singles events.
For the first time in the history of badminton, two Indians will clash in a Super Series final with Kidambi Srikanth taking on B Sai Praneeth at the Singapore Open, in Singapore, on Sunday.
Lakshya Sen is only the third Indian men's badminton player to reach the quarter-finals at the Olympic Games.
