KUALA LUMPUR: Top seed Joachim Chuah hardly raised a sweat as he brushed off Iran's Salem Al-Malki 11-2, 11-3, 11-2 to reach the boys' Under-19 quarter-finals of the Asian Junior Squash Championships in Dalian, China, on Thursday.
Compatriot and second seed Harith Danial overcame India's Aryan Pratap Singh 11-7, 11-6, 9-11, 11-6.
However, Tay Jun Qian failed to reach the last eight after losing 11-9, 7-11, 11-9, 11-9 to Hong Kong's Arthur Pak.
Meanwhile, Aira Azman, who won silver at the World Junior Championships in Melbourne last month, scored an 11-8, 11-3, 11-0 win over Sri Lanka's Chanithma Sinly to book her place in the girls' Under-19 quarter-finals.
National coach Shahril Shahidan said both Joachim and Aira performed well on Friday.
"Joachim was in top form, and his opponent could not keep up with the pace.
"Aira made a few unforced errors in the first game but regained her composure to score a win."
In the boys' Under-17 category, only second seed Lo Wa Sern reached the quarter-finals while three others lost in the second round.
Wa Sern defeated Abdullah Nadeem of Pakistan 11-3, 11-6, 11-4.
However, Amirul Aqil Zaidi lost to Sandesh Pra of India 11-9, 4-11, 11-9, 11-4, while M. Nickhileswar went down 11-5, 4-11, 11-13, 11-8, 11-8 to India's K. S. Arihant.
Compatriot M. Kreethi Pillay failed to match Pakistan's Abdullah Nawaz as he lost 11-5, 11-8, 7-11, 11-8.
Selected 2nd rd results
*Malaysians unless stated
Boys' Under-13: Yaalvennthan Ravi Kumar bt Mink I Kim (Kor) 11-2, 11-3, 8-11, 11-5; W. Lokkhesh bt Rayan Golabian (Irn) 11-1, 11-9, 11-4; Lester Leong Zhang Hao bt Dhruv Bopana (Ind) 11-9, 11-8, 11-3.
Under-15: Raziq Putra bt Huang Sydney Victor (Hkg) 11-5, 11-8, 11-8; Onn Jayden bt Shiven Agarwal (Ind) 11-6, 11-5, 11-6; Erwin Kros Christopher bt Ali Al-Darwish (Qat) 11-4, 11-4, 11-1.
Under-17: Low Wa Sern bt Abdullah Nadeem (Pak) 11-3, 11-6, 11-4.
Under-19: Joachim Chuah bt Salem Al-Malki (Irn) 11-2, 11-3, 11-2; Harith Danial bt bt Aryan Pratap Singh (ind) 11-7, 11-6, 9-11, 11-6.
Girls' under-13: Yoga Varunayvie bt Haiein Lee (Kor) 11-7, 11-6, 6-11, 11-4; Niea Chew bt Baran Rohani (Irn) 11-4, 13-11, 11-1.
Under-15: Yek Rui Jean bt Himari Midorikawa (Jpn) 11-6, 14-12, 11-8; T. Dakshayani bt Tang Lok Yin (Hkg) 14-12, 11-6, 11-9; Harleein Tan bt Naisha Singh (Sin) 11-1, 11-2, 11-2.
Under-17: Doyce Lee bt Wai Iynn (Hkg) 8-11, 11-5, 11-9, 11-7; Whitney Isabelle bt Unnati Tripathi (Ind) 9-11, 10-12, 11-7, 11-4, 11-6; Anrie Goh bt Lau Wai Tong (Hkg) 11-5, 11-6, 11-5.
Under-19: Aira Azman bt Chanithma Sinly (Sri) 11-8, 11-3, 11-0; Goh Zhi Xuan bt Lam Po Ying (Hkg) 11-3, 11-6, 11-6; U. Thanusaa bt Leung Ka Huen (Hkg) 11-6, 11-7, 5-11, 11-9; K. Sehveetrraa bt Leia Moh (Sin) 11-7, 11-3, 11-5.