INDONESIAN Olympic gold medallist Allan Budi Kusuma pulled off the only men's singles quarter-final upset in the Konica Hong Kong Open by crushing compatriot Hermawan Susanto 15-8, 15-0 at the Queen Elizabeth Stadium last night. Kusuma completely dominated the defending champion as he swept to an easy victory, booking his place in the semi-final against world number one Arbi Heryanto. Top seed Heryanto crushed South Korea's Asian Games semi-finalist Kim Hak-kyun 15-8, 15-11 to stay in line for his fifth title in 1994. The Indonesian ace had lifted the three most important titles - the All England Championships, the World Cup and the Asian Games gold. A third Indonesian to reach the tournament semi-final is popular Arbi Wiranata, the world number two who hardly raised a sweat in demolishing China's Hu Zhilan 15-3, 15-4. Dane Thomas Lauridsen, who is seeded three and four, lived up to his seeding by beating Sun Jun of China 15-7, 15-9 and will face Wiranata in the semi-final. The Indonesian domination also spread to the doubles event in which they booked two of the four semi-finals berths through Ricky Subagdja and Rexy Mainaky and Bambang Suprianto and Rudy Gunawan. Top-seeded Subagdja and Mainaky crushed Malaysians Yap Kim Hock and Tan Kim Her (Malaysia) 15-7, 15-2 in their quarter-final match while Suprianto and Gunawan downed Swedes Par Gunnar Johnsson and Peter Axelsson 15-8, 15-11. Asian Games doubles champions Subagdja and Mainaky will next meet Denmark's Jon Holst-Christensen and Thomas Lund, who edged another Indonesian combination of Antonius and Denny Kantono 15-10, 15-17, 18-17. Challenging Suprianto and Gunawan in the other semi-final will be England's Simon Archer and Chris Hunt, straight games victors over Malaysian brothers Yap Yee Hup and Yap Yee Guan. Asian Games women's gold medallist Bang Soo-hyun of South Korea breezed into the semi-final with a 11-0, 11-4 demolition of Thailand's J. Somharuthai and second seed Lim Xiaoqing of Sweden also obliged by beating Indonesia's Yuliani Santoso 11-2, 11-8. The other two semi-final berths went to Sweden's Christine Magnusson and unranked Indonesian Mia Audina.