Bernama.com Malaysian National News Agency Sports April 16, 2007 22:22 PM By Dan Guan Chin JOHOR BAHARU, April 16 (Bernama) -- The defeat of reigning All-England champions Koo Kim Keat and Tan Boon Heong in the Asian Badminton Confederation (ABC) Championship here is a lesson to them not to treat their opponents lightly, national chief coach Yap Kim Hock said Monday. He said the two were still a long way from being at the very top of their game and the learning process was still ongoing. "So, the defeat to Choong Tan Fook and Lee Wan Wah on Sunday is a lesson for them. It will tell them that they are not invincible and everybody is out to beat them. "Once you are on the court, all your previous titles don't mean a thing," he told Bernama Monday. But Yap believes that the young pair will bounce back and go on to conquer the world. "I'm not offering excuses for them. But after their return from Europe (where they won the All-England and the Swiss Open) their training schedule has been interrupted to a certain extent. "Maybe they have taken things a bit too lightly. But from now on, it will be serious stuff because there are the two Super series coming up, the Aviva Singapore Open and then the Indonesian Open, followed by the World Championship in Kuala Lumpur," Yap said. And there will also be hard work ahead for the No 1 singles, Lee Chong Wei. "He has done all right in JB. But the most important thing is that he is enjoying his training under Misbun Sidek. Chong Wei has what it takes to be a world beater. It's a matter of applying himself to the task ahead," said Yap.