However, Sai Praneeth B and seventh seed H S Prannoy bowed out of the tournament after losing their respective pre-quarterfinals matches at the Stadium Pasir Gudang.
In the women's singles, P C Thulasi progressed to last-8 as she got the better off compatriot Tanvi Lad 21-21 7-21 21-18 to set up a clash against Adrianti Firdasari of Indonesia tomorrow.
Sixth seed Gurusaidutt overcame a tough first-round fight to breeze past Indonesia's Wisnu Yuli Prasetyo 23-21 21-9 in a 36-minute duel.
Sourabh will now take on third seed Tien Chen Chou of Chinese Taipei, while Gurusaidutt too faces a stern test in Malaysia's Wei Feng Chong who is seeded second in the tournament.
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Sai Praneeth B, who prevailed over Malaysia's Nur Mohd Azriyn Ayub earlier in the day, went down against Thailand's Thammasin Sitthikom 21-17 21-14.
Prannoy HS, seeded seventh, toiled hard before losing to Nan Wei of Hong Kong 21-9 17-21 21-18.