The aim of this paper is to investigate the characteristics of the game of male and female tennis players at the Tennis Europe tournament of the super category up to 14 years - Les Petit As, and to determine whether there are differences in the characteristics of technical-tactical performance between male and female tennis players. Matches of the round of 16, quarter-finals, semi-finals and finals of the men's and women's main part of the tournament were observed. A total of 27 parameters were analyzed, which depending on the part of the game they refer to can be divided into 6 groups: time characteristics of the game, duration of points, success of playing individual shots, shot placement, position of the tennis player on the court during shots, shot frequency. The mentioned parameters were obtained by analyzing matches through the SwingVision mobile application. They are characterized by a high percentage of successfully played shots, which are most often aimed at the central part of the court, behind the service line. Male players are characterized by a more aggressive game than female players. They have recorded a higher percentage of points played with up to 5 strokes and they go to the net more often. Tennis players try to play more shots with their forehand, which in most cases is their dominant shot, and aim more shots at the opponent's backhand. The results showed that female players play significantly more points with changes over 8 shots than male tennis players. Furthermore, they play more shots with the backhand than with the forehand. While male players try to create an advantage in the rest of the points by serving to the opponent's backhand, female players by serving to the body prevent the opponent from playing a quality return by reducing the possible angle of playing the first shot. The obtained research results should be taken into account when planning and programming the training process specific to the observed age and gender of tennis players. In this way, it is possible to achieve adaptation of tennis players to specific competition requirements and competence at the highest level of competition.