San Francisco Giants vs. Cleveland Guardians
By PolySays EditorialUpdated Editorial method
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- Current leader
- Cleveland Guardians 100%
- Leader 24h
- +41%
- 24h volume
- 280.2K
- Liquidity
- 188.7K
Top outcomes
2 outcomes
Cleveland Guardians
100%
+41% 24h
San Francisco Giants
0%
-41% 24h
Odds chart
Probability over time
Story so far
Up to dateThe market has now seen a second sharp re-pricing tied to the Giants-Guardians game: after San Francisco's 1-0 win had crushed the extra-innings Yes to near zero, the Cleveland Guardians side later surged from 0 to 0.9995. The move appears to line up with the game finishing 5-2 for Cleveland, with no separate confirmed catalyst.
This story reflects the latest meaningful update PolySays has published.
Latest update
Guardians extra-innings market surged after Cleveland finished Giants game 5-2
The Cleveland Guardians’ extra-innings market jumped from 0 to 0.9995 between August 14, 2026 and August 20, 2026 after Cleveland’s 5-2 win over San Francisco was reported. The move likely coincided with the game’s final result, which removed extra-innings uncertainty.
Why this matters
Market moves can show where expectations are changing. PolySays adds the source trail so the price is not treated as proof on its own.
Known catalysts
- The earlier plunge appeared to coincide with San Francisco's 1-0 win, which removed extra-innings probability.
- The new surge appears to coincide with Cleveland's eventual 5-2 result, which also removed extra-innings uncertainty.
- Polymarket snapshot changes show a very large price shift over the observed window.
Unresolved questions
- Whether any postgame timing or reporting details amplified the Cleveland-side surge beyond the final score.
- Whether the market was already repricing before the final result was fully reflected.
- Whether this was only a reaction to game outcome or included any platform-specific re-pricing.
People and institutions to watch
Source trail
No public sources are attached yet.
Living timeline
Significant updates
Cleveland’s chance in the extra-innings market moved sharply higher as the Giants-Guardians game resolved into a normal nine-inning result. ESPN’s recap lists a 5-2 Guardians win on August 20, 2026, and MLB.com also carried the game story for the matchup. The market data shows the Cleveland Guardians outcome rising from 0 to 0.9995 over the August 14, 2026 to August 20, 2026 snapshot window, with volume increasing to 280,430.87. The move appears consistent with the completed game result rather than a separate confirmed catalyst. No additional catalyst is confirmed in the supplied sources.
What changed
Cleveland’s 5-2 win over San Francisco likely drove the Guardians extra-innings market higher, as the final score coincided with the market repricing from 0 to 0.9995.
What to watch next
Check whether any postgame corrections, grading updates, or platform-specific repricing appear after the final score; absent that, the move looks tied to the completed result.
Sources
- · ESPN
Guardians 5-2 Giants (Aug 20, 2026) Game Recap ESPN
- Giants news: Willy Adames reaches impressive feat with 1 swing vs. Guardians - Yahoo Sportssearchrelevance 76%· Yahoo Sports
Giants news: Willy Adames reaches impressive feat with 1 swing vs. Guardians Yahoo Sports
- San Francisco Giants at Cleveland Guardians Game Story, Scores/Highlights - 08/20/2026 - MLB.comsearchrelevance 99%· MLB.com
San Francisco Giants at Cleveland Guardians Game Story, Scores/Highlights - 08/20/2026 MLB.com
- · ESPN Philippines
Giants vs. Guardians (21 Aug, 2026) Game Stats ESPN Philippines
- Victor Bericoto's single and Matt Wilkinson's debut as an opener help Giants beat Guardians 1-0 - Spectrum Newssearchrelevance 96%· Spectrum News
Victor Bericoto's single and Matt Wilkinson's debut as an opener help Giants beat Guardians 1-0 Spectrum News
- Giants vs. Guardians Prediction, Odds, Probable Pitchers, Prop Bets for Thursday, Aug. 20 - Sports Illustratedsearchrelevance 75%· Sports Illustrated
Giants vs. Guardians Prediction, Odds, Probable Pitchers, Prop Bets for Thursday, Aug. 20 Sports Illustrated
- Cleveland Guardians, San Francisco Giants starting lineups for Aug. 20, 2026: Game 128 - Cleveland.comsearchrelevance 98%· Cleveland.com
Cleveland Guardians, San Francisco Giants starting lineups for Aug. 20, 2026: Game 128 Cleveland.com
- Guardians score vs Giants. San Francisco shuts out Cleveland - Akron Beacon Journalsearchrelevance 89%· Akron Beacon Journal
Guardians score vs Giants. San Francisco shuts out Cleveland Akron Beacon Journal
- · ESPN
Giants 1-0 Guardians (Aug 19, 2026) Game Recap ESPN
- · ESPN
San Francisco Giants vs. Cleveland Guardians: Game Highlights ESPN
- · ESPN
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