Trade: Will Alcaraz or Sinner win more Grand Slams in 2026?
Resolution criteria on PolyGram: This is a market to predict whether Carlos Alcaraz or Jannik Sinner wins more Grand Slam championships in 2026. If Carlos Alcaraz wins more Grand Slams in 2026 than Jannik Sinner, this market will resolve to “Alcaraz”. If Jannik Sinner wins more Grand Slams in 2026 than Carlos Alcaraz, this market will resolve to “Sinner”. If Alcaraz and Sinner win the same amount of Grand Slams in 2026, this market will resolve 50-50. Only victories in Men’s Singles Grand Slam tournaments will be considered for this market’s resolution. The relevant 2026 Grand Slams are the Men’s Singles tournaments in the 2026 Australian Open, French Open, U.S. Open, and Wimbledon.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
- Liquidity
- $2K
- Total Volume
- $5K
- 24h Volume
- —
- Open Interest
- $2K
Market outcomes
| Will Alcaraz or Sinner win more Grand Slams in 2026? | 40% YES | 61% NO |
Market context
The 2026 Grand Slam season will determine whether Carlos Alcaraz or Jannik Sinner claims more major titles across the four tournaments: Australian Open, French Open, Wimbledon, and US Open. The market currently prices Sinner's chances at 40% on Polymarket's order book, implying Alcaraz holds a 60% edge. This probability reflects their respective trajectories heading into 2026, with settlement contingent on final Grand Slam counts by 13 September 2026.
Alcaraz's historical dominance in majors provides context for the current pricing. Since breaking through in 2022, he has won four Grand Slams (US Open 2022, Wimbledon 2023, Roland Garros 2024, Wimbledon 2024), establishing himself as the tour's most consistent major champion. Sinner, by contrast, has won two Grand Slams (Australian Open 2024, Australian Open 2025), though his ascent has been notably rapid. The 60-40 split reflects Alcaraz's proven ability to win multiple majors within a calendar year—he claimed two in 2024—against Sinner's emerging but less-tested consistency at the highest level.
Key variables for traders include injury status for both players, particularly Alcaraz's recent wrist concerns and Sinner's ongoing doping case implications for ranking points and tournament access. The Australian Open in January 2026 will provide the first major data point, whilst the French Open surface historically favours Alcaraz. Sinner's performance at hard courts, where he has shown strength, will be critical given the Australian Open and US Open weighting in the calendar. Any significant ranking shifts or tour suspensions could materially alter the probability formation on the order book.
Wikipedia Context
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Alcaraz–Sinner rivalryThe tennis rivalry between Carlos Alcaraz and Jannik Sinner emerged in the early 2020s. Colloquially referred to by the media and fans as "Sincaraz", a portmanteau of their names, the pair have faced each other 17 times since 2021, with Alcaraz leading the rivalry 10–7, including 4–2 at the majors and 5–4 in finals. Alcaraz leads their five-set encounters 3–
How this market resolves
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a two-hour dispute window opens, and if no one stakes a counter-claim the payout is final. Contested outcomes escalate to UMA token-holder voting. Payouts clear in USDC to the winning side.
How to trade this market step by step
The mechanics for trading "Will Alcaraz or Sinner win more Grand Slams in 2026?" are the same as any other PolyGram event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
- Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
- Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
- Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
- Size your position. If you stake 100 USDC at 40% YES, you'll receive shares that pay $250 if YES resolves true — a 150% gross return. If NO resolves, your shares are worth $0.
- Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
- Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.
How active is this market?
$5K in lifetime turnover and $2K of resting liquidity puts this market in the below the median by volume for sinner contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
The market has been open for 4 months — the price has had time to stabilise as new information arrived.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Key terms
- YES / NO share
- A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.
- CLOB
- Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.
- Liquidity
- USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.
- UMA optimistic oracle
- The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.
- Slippage
- The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.
- Conditional token
- ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.
Frequently asked questions
What is the current probability for "Will Alcaraz or Sinner win more Grand Slams in 2026?"?
As of today, traders on Polymarket price this outcome at 40%. The number updates continuously as the order book clears. PolyGram mirrors the same live odds with locale-aware formatting and USDC settlement.
How does this market resolve?
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a 2-hour dispute window opens, and if uncontested the payout is final. Contested outcomes escalate to UMA token holders.
When does this market close?
This prediction market is scheduled to close on 13 September 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
How can I trade on "Will Alcaraz or Sinner win more Grand Slams in 2026?"?
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
What happens when the market resolves?
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Risk and regulatory note
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
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