FAHEEM Khan and Dawn Olsen remain the undisputed king and queen of local squash following lopsided triumphs in the men's and women's finals of the Perrier Closed Championships yesterday at the Hongkong Squash Centre. Ex-Pakistani junior champion Khan took only 25 minutes to demolish Andrew Shum Siu-chung 9-0, 9-0, 9-7 for his third straight Hongkong title while Olsen needed even less time in crushing Ann Chan Yuk-ngan 9-3, 9-0, 9-0. ''This is a good start to the year for me and I hope to be in the world's top 20 by the end of 1993,'' said Khan, who is currently ranked 27th on the International Squash Players' Association chart. Shum admitted he was beaten by a better player but was disappointed he failed to provide a stronger challenge, having just recovered from an illness which kept him out of training for more than two weeks. He was down with hepatitis in mid-December and had considered withdrawing from the tournament. ''I'm very upset, not because I was defeated but I know I can perform better,'' said Shum, adding: ''My fitness level is only about 50 per cent. ''But Faheem played very well, he didn't make any mistakes and was extremely quick in the first two games. Luckily he slowed down in the third otherwise I would not have taken seven points off him.'' Olsen, whose career on the women's professional circuit was ended by a nagging back injury last year, bulldozed her way past a hapless Chan in just over 20 minutes. Top-seeded Olsen was in a mean mood after having dropped three points in the opening game and she went flat out for a whitewash in the last two games. She had not dropped a game on the way to her fourth Hongkong crown but said: ''Winning the tournament wasn't as easy as it looked.''