Cape Verde Holds Spain, Iran Holds Belgium: What the World Cup's Opening Upsets Teach About the Favorite-Longshot Bias

The first goalless draw of the 2026 World Cup did not come from two cautious giants cancelling each other out. It came from Cape Verde — a chain of Atlantic islands with a population just over half a million, among the smallest nations by land area ever to reach the finals, playing the first World Cup match in its history — standing toe to toe with Spain and walking off with a point. On June 21 the Blue Sharks held one of the tournament favorites to 0-0; their goalkeeper, Vozinha, became an overnight sensation. The same weekend, Iran kept Belgium to 0-0, and Cape Verde went on to draw Uruguay 2-2. Three of the board's expensive names dropped points to opponents the market had written off.

We do not publish tips or picks, and this is not one. But upset weekends like this one are the perfect moment to look at a mistake that betting markets are built to exploit — one with a name, a century of data behind it, and your emotions on its side. It is called the favorite-longshot bias, and both the dreamer chasing Cape Verde and the "sensible" backer loading up on Spain walked into different ends of it.

The bias with your name on it

The favorite-longshot bias is one of the most replicated findings in the study of betting markets. Put simply: bettors, in aggregate, overbet longshots and underbet favorites relative to how often each actually wins. The romance of turning a small stake into a large return pulls money onto the underdog; the modest payout on a heavy favorite feels too boring to bother with. Because a bookmaker's prices respond to where the money goes, this collective behavior tends to push longshot prices shorter than their true chance warrants — meaning the upset you are dreaming of usually pays you less than its real risk deserves.

This is the uncomfortable twist a night like Cape Verde 0-0 Spain hides. The single famous upset feels like proof that backing underdogs pays. But that is survivorship bias talking: we remember the islanders who held Spain and forget the far longer list of debutants and minnows who were quietly dismantled, taking their backers' stakes with them. The market does not price the upset you remember; it prices the thousands of underdog spots across a tournament, and across all of them, the longshot side has historically been the worse bet, not the better one.

The forgotten third outcome

Football has a feature most casino games lack: a third result. A match can be won, lost, or drawn, and in a standard moneyline market — what bookmakers call 1X2 — the draw is a real, separately priced outcome sitting between the two teams. This matters enormously at a World Cup group stage, where teams that only need a point play for one, and where a defensively organized underdog like Iran or Cape Verde can make the draw the single most likely result of all.

Here is where casual bettors get caught. If you backed Spain "to win" and the game finished 0-0, you did not nearly win — you lost outright, because the draw is its own outcome, not a shade of a Spain victory. The market knew this; the price of Spain's win already implied that a non-win (a draw or a Cape Verde win) carried a real probability. The bettor who treats a heavy favorite as a near-certainty is mispricing the draw to zero in their own head, even though the board never did. To run any of these three-way prices through to its implied probability — and to see the bookmaker's margin sitting on top of all three — our betting odds and implied-probability calculator does the conversion instantly.

This is also why products like "draw no bet" exist. That market quietly removes the draw — if the game is tied, you get your stake back — which feels safer. But the price is shorter to match, so you are paying a premium for that safety. There is no free protection on a betting board; there is only a different price for a different risk. Understanding which outcomes a market includes, and which it strips out, is the difference between knowing what you bought and guessing.

Why the 'safe favorite' is its own trap

If the longshot bias snares the dreamer, its mirror image snares the cautious. The backer who avoids the romance of Cape Verde and instead piles onto Spain, Belgium and Uruguay as "safe" legs is making a different error: treating short prices as near-guarantees and stacking them. As we wrote when France compressed to the sole favorite at +400, a short price tells you an outcome is more likely — it tells you nothing about value, and the fixed house margin bites hardest on thin payouts. Three "safe" favorites combined into one slip is a parlay, and this very weekend showed how a parlay built from favorites dies: any one of Spain, Belgium or Uruguay dropping points takes the whole ticket with it, and all three did.

So the same three results that thrilled neutrals — debutants and underdogs holding the elite — were a quiet lesson in both directions. The longshot was probably worse value than it felt. The favorite was probably less safe than it felt. And the draw, the outcome neither type of bettor wanted to think about, was the one the board had been pricing as a live possibility the whole time.

Where this leaves a Filipino reader

None of this is an argument for or against any team. It is an argument for seeing a betting board the way it is built rather than the way an upset makes you feel. Three things carry from this weekend to every match still to come. First, the longshot that just won is survivorship bias in motion — across all underdog spots, the romantic side has historically been the worse value, not the better. Second, in three-way football the draw is a real, frequently-winning outcome, and a "win" bet that ends in a draw is a clean loss, not a near miss. Third, "safe favorites" are neither as safe nor as cheap as they look, and stacking them into a parlay is the fastest way to find that out.

If you do choose to bet, the rest of our coverage applies without exception. Stay inside the PAGCOR-licensed market, where you have monitoring and recourse rather than the offshore promos that swarm around a famous upset. Read the market before the emotion: our explainer on reading World Cup odds without fooling yourself walks through three-way prices and margin in detail. Set deposit and time limits before kickoff, not after a shock, and treat any stake as the price of entertainment, not an investment in a result. If betting has stopped feeling like a choice, the responsible-gambling self-assessment is a private, two-minute check, and the National Problem Gambling Helpline answers 24/7 at (02) 8248-9568. Cape Verde holding Spain was a wonderful night for football. What it did to the bet slips around it is the part worth understanding before the next giant gets held.