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406,065

Markets across

30,522

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MATCHED EVENTS:

2,692

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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San Francisco Giants vs. Seattle Mariners
polymarket
kalshi
predict

Who will win San Francisco Giants vs Seattle Mariners?

Volume:
$1,107,960

O/U 6.5

 - Polymarket

O/U 6.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 19, 2026

Closed: Jul 18, 8:08 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

O/U 6.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$37,719
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 5.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$29,348
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 4.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$16,833
N/A
N/A
N/A
Settled
Yes
kalshi

Game goes to extra innings

View
100%
Yes 100¢No 0¢
100¢
N/A
$4,933
N/A
N/A
$3,529
Settled
Yes
polymarket

O/U 3.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$248
N/A
N/A
N/A
Settled
Yes
polymarket

Extra Innings

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$42
N/A
N/A
N/A
Settled
Yes
predict

San Francisco Giants vs. Seattle Mariners

View
1%
Yes 1¢No 99¢
—
$2,241
$15,190
N/A
N/A
N/A
Settled
No
polymarket

San Francisco Giants vs. Seattle Mariners

View
0%
Yes 0¢No 100¢
—
N/A
$917,012
N/A
N/A
N/A
Settled
Yes
polymarket

O/U 7.5

View
0%
Yes 0¢No 100¢
—
N/A
$34,699
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 4.5

View
0%
Yes 0¢No 100¢
—
N/A
$19,291
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$14,322
N/A
N/A
N/A
Settled
Yes
polymarket

NRFI

View
0%
Yes 0¢No 100¢
—
N/A
$12,440
N/A
N/A
N/A
Settled
No
polymarket

Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$2,940
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 3.5

View
0%
Yes 0¢No 100¢
—
N/A
$1,935
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -2.5

View
0%
Yes 0¢No 100¢
—
N/A
$443
N/A
N/A
N/A
Settled
Yes
polymarket

Spread -2.5

View
0%
Yes 0¢No 100¢
—
N/A
$247
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 2.5

View
0%
Yes 0¢No 100¢
—
N/A
$141
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$128
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -1.5

View
0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings Spread -2.5

View
0%
Yes 0¢No 100¢
—
N/A
$14
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 5.5

View
0%
Yes 0¢No 100¢
—
N/A
$11
N/A
N/A
N/A
Settled
Yes
polymarket

1st 5 Innings O/U 6.5

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
Total markets: 22

Intro

This market tracks whether the San Francisco Giants versus Seattle Mariners game scheduled for July 18, 2026 will extend beyond nine innings. Across Polymarket, Kalshi, and Predict, the aggregated consensus shows a 99.5% probability that the game goes to extra innings, with a 0.1% probability on the Giants covering a -1.5 spread. Resolution will be determined by official MLB records. Watch for the final outcome when the game concludes on July 18, 2026 at 8:08 PM ET.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Three distinct market types covering the same underlying game event but measuring different outcomes (game winner, first-inning scoring, and extra-innings occurrence). While game winner markets are unified across Polymarket and Predict, the Kalshi extra-innings market operates under a different scope and lacks explicit cancellation/tie guidance.Hero tip: Treat these as three independent markets, not variants of the same market. Game winner markets (Polymarket and Predict) are unified and safe to cross-reference. The first-inning market is Polymarket-only and resolves independently of game outcome. The Kalshi extra-innings market is a separate bet on game length; confirm its cancellation policy directly with Kalshi before trading, as it is not documented in the provided source material.

Critical divergence points:

  • Polymarket: Two markets: (1) Game winner resolves to Giants or Mariners; cancellation/tie resolves 50-50. (2) First-inning run scoring resolves Yes if any run scored in inning 1, No otherwise. Both use MLB.com official statistics as primary source. Key Quote: 'If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50.'
  • Predict: Game winner market identical to Polymarket: resolves to Giants or Mariners; cancellation/tie resolves 50-50. Uses MLB.com official statistics. Key Quote: 'If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50.'
  • Kalshi: Extra-innings market: resolves Yes if game goes to extra innings, No otherwise. No explicit cancellation, tie, or postponement language provided. Key Quote: 'If San Francisco and Seattle go to extra innings in the San Francisco vs Seattle professional baseball game originally scheduled for Jul 18, 2026 at 8:08 PM EDT, then the market resolves to Yes.'
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

In the upcoming MLB game between the San Francisco Giants and Seattle Mariners, scheduled for July 18 at 8:08PM ET: This market will resolve to "San Francisco Giants" if the San Francisco Giants win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

Kalshi

If San Francisco and Seattle go to extra innings in the San Francisco vs Seattle professional baseball game originally scheduled for Jul 18, 2026 at 8:08 PM EDT, then the market resolves to Yes.

Predict

In the upcoming MLB game between the San Francisco Giants and Seattle Mariners, scheduled for July 18 at 8:08PM ET: This market will resolve to "San Francisco Giants" if the San Francisco Giants win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

Frequently asked questions

This dashboard aggregates prediction market data across Polymarket and Predict for the Giants vs. Mariners matchup, tracking real-time odds on multiple outcomes related to the game. Traders on both platforms collectively contribute volume of $1,107,960, with $1,053,967 in 24-hour activity. The cross-platform view lets you compare how different prediction communities price the same event, revealing consensus expectations and identifying where sentiment diverges between venues. Whether you're interested in run-scoring, final outcomes, or player performance, this market consolidates the most active predictions in one place.

Prediction markets like those tracked here operate on crowd-sourced pricing, where traders buy and sell shares based on their beliefs about the outcome. Unlike traditional sportsbooks, which set fixed odds and profit from the spread, prediction markets reflect real-time supply and demand. This often makes them more responsive to breaking news, injury reports, or lineup changes. Sportsbooks may lag slightly behind market-moving information, while prediction traders can adjust positions instantly. Both sources offer value, but prediction markets excel at capturing live sentiment shifts during the lead-up to game time.

Key catalysts include injury announcements, starting pitcher confirmations, and recent team performance trends. Weather conditions at game time—wind speed, temperature, and humidity—can dramatically affect run-scoring outcomes. Lineup changes, bullpen availability, and head-to-head matchup history all influence trader positioning. Breaking news about player availability or unexpected roster moves often triggers sharp price movements. Additionally, early-game developments, such as runs scored in the first inning, can cascade into broader market repricing if they signal momentum shifts. Monitor team news feeds and weather forecasts closely for real-time trading opportunities.