Pair #11500

Antecedent (if this happens)

KXPGATOP5-THOC26-HMAT

The Open Championship: Will Hideki Matsuyama finish top 5?

Series: KXPGATOP5
Entity: Hideki Matsuyama
Expiration: 2026-08-02T04:00:00Z
Volume: 608

YES ask: 0.0500
NO ask: 0.9600
Last: 0.0500

View on Kalshi

Rules If Hideki Matsuyama finishes in the top 5 (including ties) in the 2026 The Open Championship, then the market resolves to Yes.
Consequent (then it means this happened or will happen)

KXPGATOP20-THOC26-HMAT

The Open Championship: Will Hideki Matsuyama finish top 20?

Series: KXPGATOP20
Entity: Hideki Matsuyama
Expiration: 2026-08-02T04:00:00Z
Volume: 1690

YES ask: 0.2100
NO ask: 0.8100
Last: 0.2100

View on Kalshi

Rules If Hideki Matsuyama finishes in the top 20 (including ties) in the 2026 The Open Championship, then the market resolves to Yes.
LLM Screening

Confidence: high
Model: rule-screener-v1
Screened: 2026-07-14T07:45:35Z
Code version: ecbe685

Reasoning: rule: KXPGATOP5 is a strict subset of KXPGATOP20 for the same player and tournament

Strategy: Buy NO on antecedent + YES on consequent
Est. yield (after fees): -96.76% (negative yield)
Cost: $1.1700 + ~$0.0143 est. fees
Days to maturity: 18
Hurdle yield: 4.23%
Excess yield: -100.99% BELOW HURDLE

Human Review

Decision: confirmed
Reviewed at: 2026-07-14T07:45:35Z

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