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Toronto Blue Jays vs. Seattle Mariners Predictions

The market saysAlmost certainly not5% YES
YES 5%
95% NO

A YES share pays out if this happens and NO pays out if it doesn’t — so the 5% price is just the market’s implied chance of YES. How YES/NO contracts work →

Platform
Polymarket
Volume
$456,295 volume
Resolves
12 Jul 2026
Updated
4 days ago

The market prices a Mariners win at 95%, leaving the Blue Jays at 5%—a gap that reflects Seattle’s standing as the clear favorite. With $456k in volume, this is a modestly liquid matchup. in recent trading has held, suggesting either stable conviction or thin recent interest.

The price sits all but ruled out, which means traders are treating a Toronto victory as a long shot rather than a genuine toss-up. That read tracks with typical MLB game pricing: road teams often trade at a discount, and if the Mariners enter with better form, pitching, or recent results, the spread widens. Movement would likely follow a shift in either team’s injury status, bullpen availability, or a sharp line move at the sportsbooks that Polymarket users arbitrage against.

At these levels, you’re pricing in a concrete Seattle edge—not a certainty, but a meaningful one. The live odds are a snapshot of current belief; they’ll tighten or widen as game time approaches and new information lands.

FAQ

What does a 5% price mean?

It is the market-implied probability. A 5% YES price means traders collectively judge the event about 5% likely.

How does this market resolve?

In the upcoming MLB game between the Toronto Blue Jays and Seattle Mariners, scheduled for July 5 at 5:00PM ET: This market will resolve to "Toronto Blue Jays" if the Toronto Blue Jays win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. If the game i

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 →

Trade this on Polymarket →

Prediction market contracts carry real financial risk and can resolve to zero. 18+.