Trade: Washington Nationals vs. Arizona Diamondbacks
Resolution criteria on PolyGram: In the upcoming MLB game between the Washington Nationals and Arizona Diamondbacks, scheduled for June 5 at 9:40PM ET: This market will resolve to "Washington Nationals" if the Washington Nationals win the game. This market will resolve to "Arizona Diamondbacks" if the Arizona Diamondbacks win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers.
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
- $20K
- Total Volume
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- 24h Volume
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- Open Interest
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Market outcomes
| Washington Nationals vs. Arizona Diamondbacks | 50% YES | 50% NO |
| NRFI | 51% YES | 50% NO |
Market context
The Washington Nationals and Arizona Diamondbacks meet on 5 June at 9:40PM ET in an interleague matchup. The current order book on Polymarket reflects a 50-50 split, indicating traders perceive roughly equal probability of either team securing victory. This even pricing suggests material uncertainty about starting pitchers, bullpen availability, or recent form differentials between the clubs.
Historical context for mid-season interleague games shows that home-field advantage typically carries modest weight in MLB prediction markets, though the Diamondbacks' home venue in Phoenix presents altitude considerations that can favour power hitting. The Nationals have historically underperformed relative to preseason expectations in recent seasons, whilst Arizona made a World Series run in 2023, suggesting some residual confidence in their roster depth. Comparable June matchups between these franchises have rarely settled at exact parity unless both teams entered with similar win-loss records and injury profiles.
Traders should monitor roster updates through early June, particularly any late-breaking injuries to key position players or starting pitchers announced within 48 hours of first pitch. Weather conditions at Chase Field—temperature and wind patterns—can materially affect run-scoring expectations. Recent performance trends, including each team's record in the preceding two weeks and bullpen usage rates, will sharpen probability estimates as the settlement window approaches on 13 June. Any postponement would extend the market, potentially allowing new information to shift the order book before actual play.
Wikipedia Context
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Washington NationalsThe Washington Nationals are an American professional baseball team based in Washington, D.C. The Nationals compete in Major League Baseball (MLB) as a member club of the National League (NL) East Division. They play their home games at Nationals Park, located on South Capitol Street in the Navy Yard neighborhood of the Southeast quadrant of D.C. along the A
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Washington Nationals minor league players
Minor league players and teams affiliated with the Washington Nationals professional baseball organization include:
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Washington Nationals all-time roster
The following is a list of players, both past and current, who appeared at least in one game for the Washington Nationals National League franchise (2005–present), also known previously as the Montreal Expos (1969–2004).
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Washington Nationals (National Association)
The Washington Nationals of the 1870s were the first important baseball club in the capital city of the United States. They competed briefly in the National Association of Professional Base Ball Players, the first fully-professional sports league in baseball. The Nationals are considered a major-league team by those who count the National Association as a ma
Resolution source
This market settles from the official outcome published at https://www.mlb.com/. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
How to trade this market step by step
The mechanics for trading "Washington Nationals vs. Arizona Diamondbacks" are the same as any other PolyGram sporting 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 50% YES, you'll receive shares that pay $200 if YES resolves true — a 100% 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?
$0 in lifetime turnover and $20K of resting liquidity puts this market in the below the median by volume for sports contracts on PolyGram. Order-book depth is modest — expect a couple of cents of slippage on $1k+ trades.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
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
How does this market resolve?
Resolution is sourced from https://www.mlb.com/. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.
When does this market close?
This prediction market is scheduled to close on 13 June 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 "Washington Nationals vs. Arizona Diamondbacks"?
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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