Houston Astros @ Seattle Mariners
Final September 23, 2026 · 10:11 PM ET
Final: Houston Astros 5, Seattle Mariners 6.
How the Odds Moved, Open to Close
The best moneyline at each scan, from the first price we saw on Sep 23 to the start.
Exchanges included. Pinnacle and the offshore books are not, and Kalshi is not charted.
About This Chart
Earliest at Pinnacle: the Mariners -135 on Sep 23, closed at -123.
Where Pinnacle's Line Opened, and Where It Closed
This game was listed before Pinnacle priced it, so the number below is Pinnacle's earliest price on it rather than the first number anyone posted. It was actually posted, it is stamped with its own time, and the market may already have moved before it existed.
- Houston Astros: PINN open +122, closed +114 (shorter)
- Seattle Mariners: PINN open -135, closed -123 (longer)
Polymarket US paid the most on the Mariners at -115. $100 there made $13.43 more than at Bally Bet (-136).
Closing Prices 14 Books
Closing prices as of September 23, 10:08 PM ET. These do not move again.
Closing Moneyline
| Book | Houston Astros | Seattle Mariners |
|---|---|---|
 Novig | +117 | -120 |
 Polymarket US | +113 | -115 |
 ProphetX | +113 | -120 |
 FanDuel | +110 | -130 |
 Fanatics | +110 | -130 |
 Hard Rock Bet | +110 | -130 |
 theScore Bet | +110 | -130 |
 Bally Bet | +112 | -136 |
 BetParx | +112 | -136 |
 BetRivers | +112 | -136 |
 DraftKings | +108 | -130 |
 Kalshi | +104 | -125 |
 Caesars | +105 | -127 |
 BetMGM | +105 | -130 |
 BetOnline | +113 | -125 |
 LowVig | +113 | -125 |
 MyBookie | +109 | -128 |
 Bovada | +109 | -131 |
 Fliff | +100 | -125 |
Closing Spread best flagged at +1.5 / -1.5
| Book | Houston Astros | Seattle Mariners |
|---|---|---|
| Polymarket US | +1.5 -178 | -1.5 +174 |
| ProphetX | +1.5 -180 | -1.5 +171 |
| Novig | +1.5 -178 | -1.5 +170 |
| theScore Bet | +1.5 -190 | -1.5 +160 |
| Caesars | +1.5 -190 | -1.5 +160 |
| FanDuel | +1.5 -194 | -1.5 +160 |
| Hard Rock Bet | +1.5 -195 | -1.5 +160 |
| Kalshi | +1.5 -189 | -1.5 +158 |
| DraftKings | +1.5 -193 | -1.5 +158 |
| Bally Bet | +1.5 -190 | -1.5 +155 |
| BetParx | +1.5 -190 | -1.5 +155 |
| BetRivers | +1.5 -190 | -1.5 +155 |
| Fanatics | +1.5 -190 | -1.5 +155 |
| BetMGM | +1.5 -190 | -1.5 +155 |
| LowVig | +1.5 -193 | -1.5 +169 |
| BetOnline | +1.5 -193 | -1.5 +168 |
| Bovada | +1.5 -185 | -1.5 +160 |
| MyBookie | +1.5 -182 | -1.5 +152 |
| Fliff | +1.5 -205 | -1.5 +155 |
Closing Total best flagged at 7.5
| Book | Over | Under |
|---|---|---|
| Polymarket US | 7.5 -106 | 7.5 +104 |
| Novig | 7.5 -102 | 7.5 +100 |
| ProphetX | 7.5 -104 | 7.5 -103 |
| Kalshi | 7.5 -111 | 7.5 -107 |
| DraftKings | 7.5 -112 | 7.5 -107 |
| FanDuel | 7.5 -115 | 7.5 -105 |
| Hard Rock Bet | 7.5 -115 | 7.5 -105 |
| theScore Bet | 7.5 -115 | 7.5 -105 |
| Caesars | 7.5 -115 | 7.5 -105 |
| Fanatics | 7.5 -110 | 7.5 -110 |
| BetMGM | 7.5 -110 | 7.5 -110 |
| Bally Bet | 7.5 -113 | 7.5 -108 |
| BetParx | 7.5 -113 | 7.5 -108 |
| BetRivers | 7.5 -113 | 7.5 -108 |
| LowVig | 7.5 -103 | 7.5 -112 |
| Bovada | 7.5 -115 | 7.5 -105 |
| BetOnline | 7.5 -106 | 7.5 -114 |
| Fliff | 7.5 -110 | 7.5 -110 |
| MyBookie | 7.5 -113 | 7.5 -108 |
Previous Meetings
- Sep 22, 2026: Houston Astros 7, Seattle Mariners 0 · closing moneyline +120 / -130
Trends for This Game
About This Page
Prices are from our latest scan of every major US sportsbook and exchange, with the time shown on the card.
Best price means the most you can get paid. Offshore books and Pinnacle are never counted as best.
Exchange prices include their fees.
The Line History chart shows every scan since the game was posted.
Information only, not betting advice. 21+ only.
About These Closing Odds
Every price on this page is a book's own last quote strictly before Houston Astros and Seattle Mariners started, taken from our scan archive. A book that stopped pricing the game early still shows the number it closed at, and a book that never priced it is not listed. 20 books priced this game. The tables list the books you can bet; an offshore book shows when you turn it on in your books, and Pinnacle appears only as the reference on the chart. Prediction market prices include trading fees wherever a fee applies, so they are directly comparable to sportsbook lines. See how we calculate this.
This page is permanent. The closing prices above do not change again, and the page keeps them at this address after the game, the season and the rematch, so it stays a citable record of what this line actually closed at.
Cite this page: https://theoddsgap.com/odds/mlb/houston-astros-vs-seattle-mariners, final September 23, 2026.
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