We are working to develop an expert system that can support decision making in European football (soccer). Based on the observation of players and coaches, it will be developed as an overlay system to our soccer simulation model. In theory, we are supposed to be able to take a comprehensive look at how the players behave in the field. There are already several (GPS and video based [Brillinger, 2009], [Pino et al., 2007], [Wisbey et al., 2009], [Barbero-Álvarez et al., 2010]) methods for this. But in case of coaches, to introduce computerization and automation seems to be a more difficult problem, however the behavior of the coaches may be simply analyzed by questionnaires.