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Why football keeps believing in momentum, even when the numbers do not

Feedzy​Every tournament produces a team that is said to have the momentum. They scrape through a group game, edge a penalty shootout, and the narrative writes itself: nobody wants to play them now. As the… ​​Read More​     
Every tournament produces a team that is said to have the momentum. They scrape through a group game, edge a penalty shootout, and the narrative writes itself: nobody wants to play them now. As the World Cup moves into its decisive weeks, the word momentum is doing more heavy lifting than almost any other in studios and pubs across the country. 
The idea is intuitive and close to impossible to resist. A side that has won three on the bounce feels more likely to win a fourth. A striker who has scored in three straight games is not described as due, he is described as hot. Players talk about it, managers build team talks around it, and supporters stake their weekend mood on it.
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The trouble is that the evidence for momentum, in the strict sense of one result making the next more likely, is far thinner than the language around it suggests. The most quoted work on this goes back to 1985, when the psychologists Thomas Gilovich, Robert Vallone, and Amos Tversky studied basketball shooters and found that a made shot did not meaningfully raise the chance of the next one dropping. The hot hand, they argued, was largely a trick of memory. People notice streaks, remember them vividly, and mistake an ordinary run of randomness for a pattern.
Football is messier than a free throw, and later researchers have pushed back, showing that fitness, confidence, and a favorable run of fixtures do carry something real from one match to the next. A side riding the lift of a dramatic late comeback can play the following week with genuine freedom. But the size of that effect is small, and it is dwarfed by the stories supporters and pundits build on top of it.
This is where regression to the mean does its quiet work. A team scoring at a freakish rate will, more often than not, drift back towards its true level, and when it does the explanations arrive on cue: complacency, tired legs, a dressing room that lost its edge. Usually the simpler answer is that the hot streak was never as meaningful as it looked while it lasted.
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It is the same instinct that convinces a roulette player that red is due after a long run of black, or that a slot machine is ready to pay because it has been cold for an hour. An analysis by BestOnlineCasino.com makes the point that streaks in games of pure chance carry no memory at all, and that the sense of being on a roll is exactly the sort of pattern the brain invents to make randomness feel manageable. Football is not pure chance, but the way we narrate it leans on the same wiring.
None of this will stop anyone talking about momentum, and nor should it. The belief that a team can ride a wave is part of what makes a knockout tournament gripping, and players who feel unstoppable do sometimes play that way for a spell. The useful thing is to hold the idea a little more loosely. When the next side is anointed as the team nobody wants to face, it is worth remembering that the wave is often in the watching rather than the playing.