Played fatigue significantly influences tactical decisions in sports by affecting players' physical and mental capabilities, which can alter game strategies. As fatigue sets in, players may exhibit reduced reaction times, impaired decision-making, and diminished endurance, prompting coaches to modify formations, substitute players, or adjust game plans to maintain effectiveness. For instance, a fatigued team might shift from an aggressive pressing game to a more conservative, counter-attacking strategy, preserving energy while exploiting opposition weaknesses.