Kento Momota of Japan fought back from one game down to progress to the second round of the Badminton World Federation (BWF) Malaysia Open.
The world number one was a game down to Denmark's Jan Jorgensen in the BWF Super 750 event at Axiata Arena in Kuala Lumpur.
He survived this scare, however, turning the clash around to win 20-22, 21-13, 21-11.
Momota will face Indonesia's Jonatan Christie next as he continues his bid to win his first Malaysia Open.
Christie triumphed 21-12, 21-12 against France's Brice Leverdez in his opening match.
Second seed Shi Yuqi of China beat India's Sameer Verma 22-20, 21-23, 21-12.
He will play Denmark's Anders Antonsen, who triumphed 21-17, 16-21, 21-13 against China's Huang Yuxiang.
In the women's competition, defending champion and top seed Tai Tzu Ying of Chinese Taipei progressed to the next round with a 21-14, 21-13 victory against Hong Kong's Deng Joy Xuan.
Her next opponent will be Busanan Ongbamrungphan of Thaliand, who defeated England's Chloe Birch 21-10, 21-7.
The second seed, Japan's Nozomi Okuhara, won 21-15, 21-16 against Denmark's Mia Blichfeldt.
She will meet China's Li Xuerui in the second round.
Action continues tomorrow.