No Favorite Lost in Regulation. Five Drew. One Was Argentina.

The Fourth, at the window

Happy Fourth of July. The United States men's national team is still alive at a home World Cup, the fireworks tonight share a sky with a Round of 16 that kicks off at 1 PM Eastern, and on Monday night the market will price the most American thing it knows how to price: a coin flip with everything on it.

This is the holiday edition of what Tater does every day. One window, every market that matters: Kalshi, Polymarket, and nine de-vigged sportsbooks blended into one honest read, with the route to the best value under every number. Here is how the markets survived the Round of 32, what they are pricing for the Round of 16, and where the value actually sits today.

The Round of 32 scorecard: favorites 11-5, and every miss was a draw

Sixteen games, all settled. The market's closing favorite won eleven of them in regulation. And here is the stat of the round: not a single favorite lost a Round of 32 game outright in ninety minutes. All five misses were regulation draws. Knockout football's randomness showed up exactly where the market says it lives, in the draw column, and nowhere else.

The shock of the round needs no adjective: Argentina closed at 85.3 percent to beat Cape Verde in regulation and drew, the biggest miss by any knockout favorite this tournament (surprise index 89.2 on our scoreboard). Germany's draw hurt more: a 72.6 percent favorite held by Paraguay, then eliminated. The Netherlands followed Morocco out the same door. And two favorites drew but survived the shootout anyway, Belgium and Egypt, which is why a 3-way regulation market and a "who advances" market are different products, priced differently, on every card we show.

Average closing favorite across the sixteen: 59.7 percent. The market was honest about how hard this round was, and the round agreed with it.

Before writing this, we fixed our own math

A reader asked us yesterday whether our de-vigging held up. Fair question, so this morning we backtested it: 64 settled World Cup matches, 576 raw sportsbook quotes across nine books, three de-vig methods scored against what actually happened.

The standard method, the one nearly every "no-vig calculator" on the internet uses, systematically flattered longshots by about 4 points and shortchanged favorites by more than 5 at typical book margins. The power method cut both errors roughly in half and won every segment of the test. As of this morning, every consensus number on Tater, including every number in this article, runs on the calibrated method. We also found and repaired a results gap in our own scoreboard while we were at it, caused by a venue quietly renaming its knockout markets.

We publish this not because it is flattering but because it is the product. A lens you cannot audit is just another opinion. Ours recalibrates in public.

The trophy market: France at 35 cents, and the hosts' money

With sixteen teams left, both prediction markets agree on the favorite to the decimal: France at roughly 35 cents on the dollar, up 13.4 points on Polymarket in a single week, the sharpest move on the winner board. Argentina holds 17 despite the Cape Verde scare. Spain sits near 13, England 7, Brazil 6.5, Portugal 6.4.

But look at where the money sits rather than where the price sits, and the tournament tells you what it is: the two most-held positions in Kalshi's winner market are the hosts, Mexico and the United States, with more open interest than France. Polymarket's winner market has traded 3.9 billion dollars lifetime, and its two busiest team legs are the same pair. The crowd is not pricing the hosts to win it. The crowd wants a position on the party.

The USA leg itself is a small masterclass in why one window beats two tabs: the same trophy claim costs 3.7 cents on Kalshi and about 2.5 cents on Polymarket. A near 50 percent premium between two venues, on the same outcome, live on a holiday about independence.

The Round of 16 board

Eight games in four days, starting this afternoon. The market's regulation reads, one line each:

Today's pair is a study in contrast. Canada vs Morocco is the money game, 6.8 million dollars traded on Polymarket alone, with Morocco a solid but beatable 55 percent. Paraguay vs France is the round's heaviest chalk at 82, and after watching Paraguay draw Germany out of the tournament, nobody should say five percent is zero. Tomorrow brings the knot of the round: Mexico, England and the draw all within nine points of each other, which is as close to "nobody knows" as a liquid market gets.

The Fourth's own fixture: USA vs Belgium, Monday night

The USMNT earned its Independence Day. On Wednesday it put Bosnia and Herzegovina away 2-1 in regulation as a 71.6 percent favorite, no drama, no shootout, the kind of win the market asks of a team that means it. The reward is Belgium on Monday at 8 PM Eastern, and the market's read is the best July 4 line we could not have written ourselves: Belgium 36.6, USA 34.7, draw 28.7. On the advancement market, Kalshi has it a literal dead heat.

The crowd already voted with its wallet: the USA winner leg is one of the two most-held positions in the entire trophy market, and the USA trophy price jumped from 3.6 toward 4.4 cents in the hours after the Bosnia final whistle before settling near 3.7. Small numbers, big flag. Every fireworks show tonight is, statistically speaking, half a celebration and half a hedge.

Where the value is today

This is the part the window exists for. Three honest reads from today's board, computed with the fee math we ship on every card:

• The fees flip the answer on ten legs of this round. Across the eight Round of 16 games, the venue showing the best sticker price is not the venue with the best after-fee price ten separate times. Example: on the France leg today, Kalshi shows the cheaper number, but after its trading fee Polymarket is the cheaper claim. The star on each card has already done this math for you.
• Chalk pays the fee. France at 83 cents on a prediction market costs about 1 cent in trading fees, which is 6.2 percent of the potential winnings. Morocco at 56 costs 4.1 percent. Same headline fee rate, very different bite. On heavy favorites, compare the all-in book price before assuming the "fee-free" venue is cheaper. Our cards now show both.
• The widest opinion gap on the board is Myriad quoting England around 16 points above the blended consensus against Mexico, and a similar premium on the USA against Belgium. Myriad has no published fee schedule, so we mark it indicative and keep it out of the value ranking. A divergence to watch, not a price to chase. That restraint is also the product.

Live, per-outcome versions of these reads sit on every match page, in the "Where the value is" block, recomputed on each load: Canada vs Morocco kicks off in hours.

Watch it through the window

Every venue will show you its own price this weekend, and every one of them has a side. Tater has none. One screen: what the whole market believes, what each venue actually charges, and the route to the best value, with the math audited in public and recalibrated the morning it needed to be.

The board is live at taterit.com/world-cup. New to reading it? Start with the guide: How to Read Tater. Happy Fourth. May your favorite survive regulation.