This study aims to investigate the effects of "Small-Sided Games" (SSGs), which have become an indispensable part of modern football training methodology, on the performance components of players. SSGs refer to sport-specific drills characterized by a reduced number of players and constrained pitch dimensions. Based on a literature review and empirical results, this article emphasizes that SSGs not only enhance endurance capacity but also improve high-intensity movement variety and decision-making mechanisms.

Within the scope of the study, changes in heart rate, blood lactate concentration, and rated perceived exertion (RPE) were analyzed across different pitch sizes (small, medium, large) and player numbers (from 2v2 to 6v6). The findings indicate that as pitch size decreases, the frequency of technical skills (passing, ball control, dribbling) increases; conversely, as pitch size expands, total distance covered and the number of sprints rise. Furthermore, it was concluded that constraints imposed by coaches on game rules (limit on touches, man-to-man marking, etc.) directly affect players' tactical awareness levels. In conclusion, SSGs are considered a more effective method than traditional running drills because they simultaneously provide physical loading and technical-tactical development.