Twenty-four hours after watching his two stars set the All England Championships alight, Hong Kong national coach Chan Chi-choi fell back to earth when they were sent packing in the men's and women's singles. Chan was surprised that men's giant-killer Agus Hariyanto and women's hope Wang Chen had both produced 'flat performances' in losing their quarter-final matches at the National Indoor Arena. Hariyanto, who claimed the scalp of world number one Xia Zuanza on Friday, was on the receiving end of a 7-3, 7-2, 7-1 thrashing by Indonesia's Budi Santoso. And there was more bad news for Hong Kong when Wang, seeded fourth, was humbled in her 7-2, 7-3, 7-2 loss to seventh seed Dai Yun of China. 'It was a big surprise that they both lost in straight games. I had expected both quarter-finals to go to five games, but that never happened. I thought we had a 50-50 chance of winning both games, but we were far away from achieving that. Am I disappointed? Not really because we had performed beyond our expectations by reaching two quarter-finals singles at the world's most prestigious event,' said Chan. But Chan said it was disheartening to know that his players will play no part in today's semi-finals having shown so much promise in the earlier rounds. 'The draft inside the stadium did make the difference. They were playing with three courts instead of five courts and there was a lot of wind, which made playing difficult. My players didn't handle the situation as well as their opponents. 'Wang was a bit temperamental in her game and she even completely missed a shuttle return and didn't have her mind on the job that well. She might have put pressure on herself knowing she was in the quarter-finals. 'Agus was a disappointment as well. He didn't perform as well as I had expected. He felt nervous playing before a bigger crowd and in front of the television cameras. He wasn't given much of a chance and his game quickly folded. 'I guess we will use this as experience for future games. I hope the players will respond a bit better when faced with the same situation. I think we have learned a big lesson,' said Chan. Agus was never allowed to get into any sort of rhythm against Santoso, a player he met for the first time on the circuit. Santoso hurriedly took the first game 7-3 and simply overwhelmed the Hong Kong player in the next two games for victory. Wang was also a huge let-down. Her challenge fizzled out against Dai, whom she had beaten once before from two meetings. The Hong Kong number one was never able to dictate terms against the mainlander and was soundly beaten. 'I guess the players have to get used to the idea that they had reached the quarter-finals of the All England Championships and not be overawed by the occasion again. We have a lot of work to do and we will now concentrate on the Swiss Open [St Jakobshalle, Basel]. Hopefully we can achieve better results,' said Chan.