Who will win a ATP Grand Slam in 2026?

Sports TennisOne-Off5mo

KalshiCheck availabilityKYC required2% feeVerified resolution dataRoughly calibrated

Current implied probability

Frances Tiafoe 1%

Leader of 14 outcomes

Market quality

77 / 100

High quality

24h Volume

$9.9K

Liquidity

$122.6K

High liquidity

Bid / Ask

- / 1.0%

Market data

Updated 22 minutes ago

Dec 20, 25, 3:00 PMDec 31, 26, 4:59 AM

Trends

Outcome24hChance

Paper funds only — no real moneyNot financial advice

Selected outcome

Frances Tiafoe1%

Stake (USDT)

Rules

If Jannik Sinner 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.
Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League.
All trademarks, logos, and brand names are the property of their respective owners.
If Alexander Zverev wins a tennis major (the Australian Open, the U.S.
If Novak Djokovic wins a tennis major (the Australian Open, the U.S.

Large trades

$3.9k99.0%

KALSHIFrances Tiafoe — No5h ago

$3.0k99.0%

KALSHIFrances Tiafoe — No5h ago

Volume trend

$9.9k

Jul 217d of dataJul 18

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Who will win a ATP Grand Slam in 2026?

Sports TennisOne-Off5mo

KalshiCheck availabilityKYC required2% feeVerified resolution dataRoughly calibrated

Current implied probability

Frances Tiafoe 1%

Leader of 14 outcomes

Market quality

77 / 100

High quality

24h Volume

$9.9K

Liquidity

$122.6K

High liquidity

Bid / Ask

- / 1.0%

Market data

Updated 22 minutes ago

Dec 20, 25, 3:00 PMDec 31, 26, 4:59 AM

Trends

Outcome24hChance

Paper funds only — no real moneyNot financial advice

Selected outcome

Frances Tiafoe1%

Stake (USDT)

Rules

If Jannik Sinner 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.
Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League.
All trademarks, logos, and brand names are the property of their respective owners.
If Alexander Zverev wins a tennis major (the Australian Open, the U.S.
If Novak Djokovic wins a tennis major (the Australian Open, the U.S.

Large trades

$3.9k99.0%

KALSHIFrances Tiafoe — No5h ago

$3.0k99.0%

KALSHIFrances Tiafoe — No5h ago

Volume trend

$9.9k

Jul 217d of dataJul 18

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