This data was then used to make basic tactical decisions and evaluate player performance.
Traditional data analysis in sports began with simple statistical surveys and observations, often performed manually. In the early days of football, for example, these analyses were limited to basic statistics such as goals, assists, fouls, and playing time. Coaches and analysts used handwritten notes and spreadsheets to track the performance of players and teams. This data was then used to make basic tactical decisions and evaluate player performance.