BUDDING squash starlet Christina Mak Wai-ying and three boys - Adrian Fong Tin-yau, Yan Ka-ho and Billy Chan Ying-sheung - are in Kuala Lumpur for the first leg of the Malaysian Junior Squash Circuit this weekend. Christina will be taking part in the girls' under-19 competition while the boys are in the under-16 event. 'The four players are in Kuala Lumpur to gain experience because they are preparing for two major international events coming up in the summer,' said Tony Choi Yuk-kwan, the assistant national coach. 'Christina is in the women's training squad for the East Asian Championships in June and the boys are getting ready for the World Junior Men's Championships in July.' The quartet, however, are not guaranteed places for the two championships and they face a difficult task making the team. Christina's chances for selection have been hit by the return of undisputed Hong Kong champion Dawn Olsen, who has fully recovered from a nagging back injury which kept her away from squash for more than two years. Also challenging Christina for a place in the four-strong women's team for the East Asian Championships in Jakarta are Rebecca Chiu Wing-yin, Catherine Radcliffe and Iris Chung Suet-mei. There are currently seven players in the boys' training squad, including Wong Wai-chung, Vincent Cheung Cheuk-yin, Roger Ngan Lun-cheung and Paul Ng.