Would you bet…
St. Louis Cardinals vs. Arizona Diamondbacks Predictions
A YES share pays out if this happens and NO pays out if it doesn’t — so the 4% price is just the market’s implied chance of YES. How YES/NO contracts work →
- Platform
- Polymarket
- Volume
- $364,059 volume
- Resolves
- 25 Jul 2026
- Updated
- 3 months ago
The Cardinals are all but ruled out in this matchup, priced at 4% on Polymarket. The Diamondbacks command 96%, reflecting a decisive market consensus. With $364k traded, this is a moderately liquid book for a single-game MLB contract.
A price this lopsided typically signals either strong public information favoring Arizona—roster health, recent form, pitching advantage—or simply that the market perceives one team as the clear favorite. To move this contract materially, you’d need a late injury announcement, a surprise lineup change, or weather developments affecting playing conditions. Single-game markets can also tighten if sharp money arrives with contrarian conviction, though in recent trading suggests that hasn’t has held recently.
The resolution mechanics are clean: Cardinals win, YES resolves to 100; Diamondbacks win, NO resolves to 100. A postponement keeps the market live until completion; a cancellation with no makeup triggers a 50-50 split. At these odds, you’re essentially betting against the consensus. That trade makes sense only if you have information or an edge the market has missed.
FAQ
What does a 4% price mean?
It is the market-implied probability. A 4% YES price means traders collectively judge the event about 4% likely.
How does this market resolve?
In the upcoming MLB game between the St. Louis Cardinals and Arizona Diamondbacks, scheduled for July 18 at 4:10PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. This market will resolve to "Arizona Diamondbacks" if the Arizona Diamondbacks win the g
Where can I trade it?
This market is listed on Polymarket. Prediction markets carry real financial risk and may not be available in every state.
Is this the same as sports betting?
Legally it’s event-contract trading on a regulated exchange, not a sportsbook bet — though the experience is similar. Read our prediction markets vs sports betting explainer.
Can I trade sports where betting is illegal?
Often yes, because these are federally regulated contracts — but sports is restricted in some states, so always check your state first.
Best platforms for sports?
Kalshi has the broadest catalog; DraftKings and FanDuel are strong for sports-first traders. See our reviews.
What is a prediction market?
A prediction market lets you trade contracts on whether a real-world event will happen. The live price moves with supply and demand and reads as the implied probability. Read more →
How do the odds work?
Every price between 1¢ and 99¢ is the implied chance of YES. A contract settles at $1 if it resolves yes and $0 if it does not. Read more →
Prediction market contracts carry real financial risk and can resolve to zero. 18+.
Before you trade
Read our independent reviews of the platforms behind these markets.