A case study of leading football matches for some international teams

The study aimed to find out the percentage of times of goal scoring and substitutions during the leadership of some World Cup qualifying matches (2018 - Russia). And also to identify the relationship of goal scoring with substitution times during the leadership of some World Cup matches (2018 - Russia), and the researcher used the descriptive research method, and the sample was chosen by the intentional method and it complied with some teams in the World Cup (2018 - Russia), and their number ( 8) Teams, specifically the qualifying teams for the quarter-finals (Russia, Uruguay, France, Croatia, Brazil, Sweden, Belgium, and England), and it was reached that the highest percentage of players switching was in the second half by (60%) in the minutes (76 - 90), and that the highest number of goals reached (4) goals, ranging between (66.7-80%), in the times between (45-60) (61-75) in the second half while leading the games. As well as the existence of a significant correlation between goals scoring times and substitutions for teams (Russia, Uruguay, France, Croatia, Sweden, Belgium) in the World Cup matches (2018 - Russia). The researcher recommended the following: Try to use substitutions as much as possible in the minutes (76-90) to score goals, as well as making use of goal scoring times by making technical substitutions and tactical changes in the appropriate time period in light of match conditions.