Tennis has been rapidly evolving for years. The materials are constantly being improved, and the rules are being changed. Most importantly, however, the playing style of the players is changing, which in turn affects the structure of the game. The serve is the most critical criterion for a player's success. This paper examines the characteristics of modern top-level tennis. It analyzes the average and individual effectiveness of each player during the serve. To clarify this, the collected parameters of the serve and return are used. Both the individual and average changes in these parameters are compared to highlight differences.