Trade: KBO: Doosan Bears vs. Kia Tigers
Resolution criteria on PolyGram: This is a market on the KBO baseball game between Doosan Bears and Kia Tigers, scheduled for May 13 at 5:30AM ET. This market will resolve to "Doosan Bears" if the Doosan Bears win the game. This market will resolve to "Kia Tigers" if the Kia Tigers 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 will be official information from the KBO. A consensus of credible reporting may also be used.
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
- $11K
- Total Volume
- —
- 24h Volume
- —
- Open Interest
- —
Market outcomes
| KBO: Doosan Bears vs. Kia Tigers | 50% YES | 50% NO |
Market context
The Korean Baseball Organisation fixture between Doosan Bears and Kia Tigers on 13 May represents a mid-season matchup in the KBO's regular campaign. The 50% implied probability on Polymarket's order book reflects genuine uncertainty between two competitive franchises, with neither side commanding a decisive edge in current market pricing.
Doosan and Kia have established themselves as consistent contenders in recent KBO seasons, with historical head-to-head records typically close enough to justify even odds in individual games. The Bears have periodically dominated stretches of the season, whilst the Tigers maintain strong defensive fundamentals and pitching depth. Comparable fixtures between these sides over the past two seasons have settled across a range of outcomes, with home-field advantage and starting pitcher matchups proving material factors in determining results. Current market pricing at 50-50 suggests traders are weighting recent form, injury status, and roster composition as roughly balanced.
Traders should monitor KBO announcements regarding starting pitcher assignments, which typically emerge three to five days before fixtures. Doosan's recent win-loss record and any roster adjustments will influence positioning, as will Kia's performance in games immediately preceding 13 May. Weather conditions in Seoul on game day—temperature and wind patterns—can affect play at Jamsil Stadium and merit attention closer to the settlement window. The settlement deadline of 20 May provides a week buffer for any postponement scenarios, though the KBO generally maintains fixture schedules where possible.
Wikipedia Context
-
Khorusan
Khorusan is a village in Japelaq-e Sharqi Rural District, Japelaq District, Azna County, Lorestan Province, Iran. At the 2006 census, its population was 277, in 74 families.
-
Koro's Big Day OutKoro's Big Day Out is a 2002 Japanese animated short film written and directed by Hayao Miyazaki. The film is about Koro the puppy, who runs away from his mistress, experiences some adventures around town and who is finally happily returned home. The film is exclusively shown at the Ghibli Museum and Ghibli Park, both in Japan.
Resolution source
This market settles from the official outcome published at https://www.koreabaseball.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 "KBO: Doosan Bears vs. Kia Tigers" 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 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 $11K of resting liquidity puts this market in the below the median by volume for baseball 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
What is the current probability for "KBO: Doosan Bears vs. Kia Tigers"?
As of today, traders on Polymarket price this outcome at 50%. 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 sourced from https://www.koreabaseball.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 20 May 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 "KBO: Doosan Bears vs. Kia Tigers"?
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.
Related prediction markets
Explore more prediction market odds and trading opportunities on PolyGram: