In tennis, over the years of coaching, players strive to develop a style of play based on technique and tactics on their own, certain physical, motor and mental characteristics. The goal is to be faster, better, stronger. Prerequisites for this are physical fitness, mental strength, but above all better adoption of the optimal tennis technique that allows the player to play with less effort and prevent injuries. After a brief overview of the changes that have occurred in tennis over time, the aim of this paper is to explain the structure of tennis strokes and describe in detail the biomechanical principles, biomechanics of basic strokes of modern tennis, individually, through procedures and stages of strokes. Furthermore, the key elements of impact biomechanics are systematized, which are responsible for achieving the high speed of the racket at the moment of impact and thus the speed of the ball. Although the players' shots differ, they all meet the biomechanical principles that are necessary for the blow to be safe, precise and strong, and for the possibility of injury to be minimized in repeated movements. By correcting mistakes in the technique of performing the blow, the player is enabled to produce the most efficient blow with as little energy as possible. In doing so, it is very important that in corrections, coaches focus on the essential parts of the movement that will lead to the effectiveness of the stroke, without wasting time on correcting the individual style.