Martial arts have gained world attention as a sport such as Taekwondo. Tournaments for Taekwondo have been organized internationally, and the advent of technology have improved the system in the tournament gradually such as the point score system. However, there are always an issue for open tournament where the live update during the tournament is traditionally conducted by announcement. Thus, a web-based system named TaekMasChart is developed in order to telecast the real-time update for the games during the tournament. This paper focuses on evaluating the system which has been used in a real tournament. The results show that TaekMasChart gained high satisfaction among coaches, participants, secretariat of tournament as well as spectators. In future, TaekMasChart is believed to be able to be widely used in many other Taekwondo tournaments as well as many other martial arts sports.