Tennis players with basic skills are invited to join the K-Swiss 7.0 Challenge which allows players to see how their talents measure up. It is a ranking system based on the National Tennis Rating Programme designed by the United States Tennis Association (USTA). Those who stand out will get the chance to mix it with some of Hong Kong's best. The USTA defines player levels on a scale from 1.0 to 7.0 - 1.0 is the lowest level and applies to beginners; 7.0 is the highest, normally reserved for professional players. The K-Swiss Challenge is divided into sections. First, the skills level of participants is tested for serving, forehand, backhand, volley and smash. Ratings on each skill are judged by professional tennis coaches. Those with a 4.0 level will be entitled to compete against former national team players such as Pang Lui. The event is tomorrow at Victoria Park. Organisers will provide K-Swiss tennis shoes for those taking part. Outstanding participants may win K-Swiss prizes. Interested players should call 2686-3169 for details. Admission is on a first-come-first-served basis.