Abstract: This webinar is focused on describing the importance of the data in soccer and in particular on the athletic trainer point of view. Cristoforo Fialetti, an athletic trainer from Paris Saint-Germain, will describe how the soccer clubs collect data and how these data are processed and used for players' assessment and training schedule. Bio speaker: Cristoforo Filetti is a sports science with a master degree in Sports Science obtained at the University of Tor Vergata, Roma. During his PhD, Cristoforo focused his researches on soccer and in particular on the study of training workload effects in collaboration with AS Roma and during his experience in Qatar. After that, he started his career as an athletic trainer at US Salernitana and now he has moved to Paris Saint-Germain to continue his experience as an athletic trainer.