Antecedent (if this happens)
KXWTAGRANDSLAM-26-MKEY
Will Madison Keys win a Tennis Grand Slam in 2026?
Series: KXWTAGRANDSLAM
Entity: Madison Keys
Expiration: 2026-12-31T15:00:00Z
Volume: 1372
YES ask: 0.1500
NO ask: 0.9800
Last: 0.1600
View on Kalshi
Rules
If Madison Keys wins a tennis major (the Australian Open, the U.S. Open, the French Open, or Wimbledon) before Dec 31, 2026, then the market resolves to Yes.
Consequent (then it means this happened or will happen)
KXWTAMATCH-26MAR20RUSKEY-KEY
Will Madison Keys win the Ruse vs Keys : Round Of 64 match?
Series: KXWTAMATCH
Entity: Madison Keys
Expiration: 2026-03-20T21:30:00Z
Volume: 6570
YES ask: 0.6900
NO ask: 0.3200
Last: 0.6900
View on Kalshi
Rules
If Madison Keys wins the Ruse vs Keys professional tennis match in the 2026 WTA Miami Round Of 64 after a ball has been played, then the market resolves to Yes.
Confidence: none
Model: claude-sonnet-4-6
Screened: 2026-03-21T08:05:08Z
Reasoning: Winning a Grand Slam in 2026 is entirely independent from winning a WTA Miami Open Round of 64 match. Neither implies the other.
Strategy: Buy NO on antecedent + YES on consequent
Yield:
-58.47%
(negative yield)
Cost:
$1.6700
Days to maturity:
213
Hurdle yield:
4.28%
Excess yield:
-62.75%
BELOW HURDLE