polymarketSeptember 16, 20264d agoBoston Red Sox vs. Texas Rangers - MLB Game Winner (Sept 15, 2026)
Will the Boston Red Sox win against the Texas Rangers on September 15, 2026?
Signal
SELL
Probability
0%
Confidence
HIGH
100%
Summary.
The game has already been played and concluded on September 15, 2026 (today is September 16, 2026). Official MLB box scores confirm the Texas Rangers defeated the Boston Red Sox 4-2 at Globe Life Field. The market asks if the Red Sox will win, and they definitively lost. My estimated probability is 0.0% (absolute certainty the Red Sox did NOT win), while the market is still pricing YES at 0.0005 (0.05%). This represents a pure arbitrage opportunity—the outcome is already determined with 100% certainty. Rangers scored all 4 runs in the 2nd inning off struggling Red Sox starter Patrick Sandoval, while their bullpen shut down Boston for the final 6 innings. Multiple authoritative sources (MLB.com official box scores, Baseball Reference, Polymarket post-game data) all confirm the identical final score with no discrepancies. The market should resolve to NO per the resolution criteria.
Reasoning.
CRITICAL: This is post-game analysis, not prediction. The game occurred on September 15, 2026, and today is September 16, 2026.
FINAL OUTCOME: Texas Rangers defeated Boston Red Sox 4-2 at Globe Life Field in Arlington, Texas.
Step-by-step reasoning:
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Temporal Grounding: The bet asks "Will the Boston Red Sox win against the Texas Rangers on September 15, 2026?" Since today is September 16, 2026, this game has already concluded. This is a resolution verification, not a probabilistic prediction.
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Official Result Confirmation: Multiple authoritative sources (official MLB box score, Baseball Reference, Polymarket post-game data) all confirm identical final score: Rangers 4, Red Sox 2.
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Game Summary:
- Rangers scored all 4 runs in the 2nd inning (Elias Díaz two-run double, Corey Seager two-run single)
- Red Sox scored only 2 runs via Nick Sogard HR in 3rd inning
- Red Sox starter Patrick Sandoval imploded (2.2 IP, 4 ER)
- Rangers bullpen dominated for final 6 innings (scoreless)
- Jacob deGrom earned the win for Texas
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Resolution Certainty: The bet resolution criteria states the market resolves to YES if Red Sox win, NO if Rangers win. Rangers won definitively 4-2, so the market MUST resolve to NO.
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Current Market Price Analysis: The Polymarket price of 0.0005 (0.05%) for YES correctly reflects post-game certainty. This is essentially 0%, with the tiny residual likely representing settlement delay or irrational positions.
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Pre-game Context (for completeness): Before the game, prediction markets showed Rangers at 54% win probability despite being home underdogs (+104 vs Red Sox -128), suggesting sharp money recognized value. This proved prescient.
Estimated Probability: 0.0 (0%) - The Red Sox did NOT win. The game is over and Rangers won decisively.
Key Factors.
Game already completed on September 15, 2026 (analysis date: September 16, 2026)
Official MLB box score confirms Rangers won 4-2
Rangers' decisive 2nd inning (4 runs) determined outcome
Red Sox starter Patrick Sandoval's poor performance (2.2 IP, 4 ER)
Rangers bullpen dominance (6 scoreless innings after 3rd)
Red Sox offense went silent after Sogard's 3rd inning HR
Multiple authoritative sources confirm identical final score with no discrepancies
Scenarios.
Actual Outcome (Rangers Win 4-2)
100%This is what actually happened. Rangers scored all 4 runs in 2nd inning and bullpen shut down Red Sox for final 6 innings. Sandoval imploded early for Boston. Final score: Rangers 4, Red Sox 2.
Trigger: Official MLB box score confirms this result. Game has been completed and verified by multiple authoritative sources.
Red Sox Win Scenario
0%Red Sox would have needed to outscore Rangers. This did NOT happen. They lost 4-2.
Trigger: This scenario did not occur. Red Sox scored only 2 runs (Sogard HR) and could not overcome Rangers' 4-run 2nd inning.
Game Postponed/Canceled
0%Game could have been postponed or canceled, keeping market open per resolution criteria. This did NOT happen.
Trigger: Game was completed as scheduled on September 15, 2026 at Globe Life Field. No weather delays or cancellations.
Risks.
Data source error (EXTREMELY unlikely - multiple independent sources confirm same result)
Game statistics could theoretically be overturned due to scoring error or protest (historically happens <0.01% of time in MLB)
Resolution source using different data than official MLB statistics (resolution criteria prioritizes MLB official stats)
Market settlement delay causing temporary mispricing (current 0.0005 price suggests market already knows outcome)
Statistical correction to box score within 24-hour window (extraordinarily rare for clear 4-2 final)
Edge Assessment.
STRONG EDGE: Market should be trading at 0.0000, not 0.0005
The current market price of 0.0005 (0.05%) for YES (Red Sox win) is STILL OVERPRICED given the game has conclusively ended with a Rangers 4-2 victory.
The correct probability is 0.0% (absolute zero). The Red Sox did not win. The game is over. Official results are confirmed.
The 0.05% residual pricing likely reflects:
- Settlement lag (market hasn't officially resolved yet, resolution date is Sept 23)
- Irrational positions by uninformed traders
- Tiny liquidity providing minimal arbitrage opportunities
- Potential UI/display rounding of near-zero values
Recommendation: If this market is still accepting trades, selling YES at ANY price above 0.0 represents pure arbitrage profit, as the outcome is already determined with 100% certainty. The market WILL resolve to NO (Red Sox loss).
Pre-game perspective: Interestingly, sharp money correctly identified value on Rangers pre-game (54% probability vs 49% implied by +104 odds), proving prescient when Rangers won.
What Would Change Our Mind.
Official MLB announcement overturning the game result due to protest or scoring error (extraordinarily rare, <0.01% historical probability)
Discovery that the September 15, 2026 game was actually postponed/canceled and the reported result was from a different game (multiple independent sources make this impossible)
Evidence that resolution source will use data contradicting official MLB statistics showing Rangers 4, Red Sox 2 final score
Sources.
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