How much luck do you need to win the World Cup?

Winning the World Cup requires a significant degree of luck, often accounting for up to 75% of the outcome for even the best teams. Football’s inherent unpredictability stems from its low-scoring nature; unlike basketball or tennis, where high scoring events stabilize results, a single goal in football can disproportionately determine a match. Statistical analysis of over 5,000 matches across 12 sports confirms that football has the highest "underdog achievement" score, making it the most random of major ball sports. Experts Ian Graham and David Sumpter highlight that while skill allows teams to create more "expected goals" (xG), the chaotic movement of the ball makes it impossible to predict play more than ten seconds into the future. Consequently, a five-match tournament run is too short to eliminate randomness, meaning the most skilled team has only a 20-25% chance of securing the trophy.