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Houston Astros vs. San Diego Padres

Five-platform snapshot of "Houston Astros vs. San Diego Padres" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

1st 5 Innings O/U 2.5 100% 1st 5 Innings O/U 3.5 84% O/U 6.5 84% O/U 7.5 68% Volume: $979K Liquidity: $751K Closes: 17 Aug 2026
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Houston Astros vs. San Diego Padres

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via PolyGram) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle View on Polymarket →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain View on Polymarket →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD View on Polymarket →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR View on Polymarket →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) View on Polymarket →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
1st 5 Innings O/U 2.5100%
1st 5 Innings O/U 3.584%
O/U 6.584%
O/U 7.568%
1st 5 Innings O/U 4.563%
O/U 8.557%
Houston Astros vs. San Diego Padres56%
O/U 9.545%
1st 5 Innings O/U 5.544%
Spread -1.540%
O/U 10.536%
1st 5 Innings O/U 6.530%
Spread -2.528%
Spread -1.527%
1st 5 Innings Spread -1.526%
1st 5 Innings Spread -1.517%
Spread -2.517%
Extra Innings16%
NRFI0%

Market context

The Houston Astros and San Diego Padres are in the middle of a three-game set at Petco Park, and the contract’s **61% YES** price implies the Astros are modest favourites to take the next completed game. That is broadly in line with the cross-market picture: ESPN listed San Diego at **-111** on the matchup page, while other pregame boards showed a narrower Padres edge around **-124** to **-116**, suggesting a close game rather than a strong side. The actual series results also matter for read-through: San Diego won **3-2** on Saturday after Houston won **6-3** on Friday, so the matchup has already shown little separation.[2][5][7][8]

Historically, a 61% contract in a near pick’em MLB spot usually reflects a combination of recent form, venue, and expected pitching rather than a dominant team gap. The teams entered the series with similar records and comparable run prevention, with Houston at **60-58** and San Diego at **61-57**, and the Padres holding the better home mark. Box scores and recent previews also showed both clubs producing at a similar level over their last ten games, which helps explain why analysts and sportsbooks have not pushed this into a wide favourite/underdog range.[2][11][16]

For traders, the main catalysts are the confirmed starter, any late lineup rest, and whether the game remains on schedule after the weekend set. Because the market resolves only after the game is completed, postponement would extend the contract rather than settle it immediately, while a cancellation or tie would trigger the 50-50 clause. With the most recent game decided by one run and the series split through two games, any late bullpen usage, scratches, or weather-related schedule changes would be the clearest drivers of a move away from the current crowd-implied probability.[2][3][4]

Sources: 1 · 2 · 3 · 4 · 5

Live Data & Statistics

The Polymarket order book prices 1st 5 Innings O/U 2.5 at 100% for "Houston Astros vs. San Diego Padres".

1st 5 Innings O/U 2.5 100% Other 0%

Live stats load when the match begins. Current market odds are shown above. Trading volume: $979K.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

How does resolution work?
Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
What does Polymarket cost to trade?
Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
How fast are USDC deposits?
Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
Do I need to KYC for this market?
On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
How reliable are the quoted odds?
The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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Related Topics

Sports