In his first major tournament, 18-year-old Adam Agan Bin Aziz recovered from opening-set jitters to record a straight-sets win against Hong Kong's Lap Au.

He trailed 6-0 in the opener before fighting back to seal an 11-8, 11-6, 11-8 victory to progress to round two at Bukit Jalil National Squash Centre.

"It's my first World Juniors and I was feeling very nervous and I made a lot of mistakes which gave my opponent a 6-0 lead to start," said Agan Bin Aziz.

"But after that I grew calmer and managed to execute my game plan to apply more pressure on him.

"I'm pleased to get off to a fine winning start because I really wanted to do well in my first major competition.

"Now I need to ensure that I do not start nervously in the second round.

"I need to stay calm and play a thinking game with better shot selections if I hope to go further."

Agan Bin Aziz's next opponent will be Yehia Elnawasany of Egypt.

Compatriot Darryl Gan was on the wrong end of a five-set thriller against Hong Kong's To Wai Lok.

Gan squandered match ball as he led 2-1 and 10-9 in the fourth set before crumbling to Lok's pressure in an 11-5, 9-11, 4-11, 12-10, 11-8 defeat.

Czech Republic player Petr Nohel set up a clash with top seed Mostafa Asal by defeating Colombia's Andres Villamizar 11-9, 11-7, 3-11, 12-10. 

Hong Kong's Wong King Yeung fought back from 2-1 down to beat Colombia's Nicolas Serna 11-7, 5-11, 8-11, 11-9, 11-9.

In the women's draw, South African Taryn Emslie saved match ball against New Zealand's Sophie Hodges before turning the contest around for a 9-11, 4-11, 12-10, 11-6, 11-9 victory in 34 minutes.

Australia's Erin Classen won in five sets against South Africa's Faith Panashe Sithole 11-3, 12-10, 8-11, 6-11, 11-8 to set up duel with England's Elise Lazarus.

Elsewhere Czech Republic's Tereza Siroka defeated New Zealand's Natalie Sayes 12-10, 11-6, 6-11, 7-11, 12-10 to rubber-stamp a clash with Malaysia's Ainaa Ampandi.