Seattle Mariners vs Houston Astros Odds
Best MLB price on Seattle Mariners vs Houston Astros, compared across every major US sportsbook plus Kalshi, Polymarket US, ProphetX and Novig. Fri Aug 14, 8:11 PM ET.
Odds from the latest scan: August 13, 5:05 PM ET. Games starting within 24 hours refresh every minute; later games every 30 minutes and every hour as kickoff approaches during the beta; the free board refreshes hourly.
Moneyline
Spread
Total
Every Book's Moneyline
| Book | Seattle Mariners | Houston Astros |
|---|---|---|
| Novig | +115 | -117 |
| BetOnline | +113 | -125 |
| LowVig | +113 | -125 |
| Hard Rock Bet | +115 | -125 |
| Polymarket US | +108 | -125 |
| FanDuel | +110 | -130 |
| theScore Bet | +110 | -130 |
| DraftKings | +109 | -131 |
| Kalshi | +109 | -131 |
| Fliff | +105 | -135 |
| BetMGM | +110 | -135 |
11 books priced this game. Prediction market prices (Kalshi, Polymarket, ProphetX) include trading fees, so they are directly comparable to sportsbook lines.
On Seattle Mariners vs Houston Astros, the best available price is not the same at every book. One sportsbook might post a side at -110 while another has it at -102, and taking the better number is the one edge you fully control. The Odds Gap scans every major US sportsbook plus the Kalshi, Polymarket, and ProphetX exchanges and flags where the best price sits on each side of this MLB matchup.
How to read these Seattle Mariners vs Houston Astros odds
The cards above show the best moneyline price on each side and which book has it. The spread line shows Houston Astros at the market's consensus number, priced at the best odds among books quoting it. The total shows the Over at the consensus number. For every book's price on every market, open the game in the Line Shop.
What the Price Gap Is Worth
Across the 11 books quoting this side, the best price is -117 at Novig and the worst is -135 at Fliff. Same bet, same outcome, $11.40 difference in profit on a $100 stake. Nothing about the wager changes, only where you place it.
- Seattle Mariners: best +115 (Hard Rock Bet), worst +105 (Fliff)
- Houston Astros: best -117 (Novig), worst -135 (Fliff)
Seattle Mariners vs Houston Astros Odds: Common Questions
Who has the best odds on Seattle Mariners vs Houston Astros?
At the latest scan Hard Rock Bet pays the most on Seattle Mariners at +115, and Novig pays the most on Houston Astros at -117. Those are two different books more often than not, and the best number moves as books reprice, so check the table on this page before you bet rather than assuming one book wins both sides.
How much does the price differ between sportsbooks on this game?
Right now 11 books price this side, and the spread between the best and worst of them is -117 at Novig versus -135 at Fliff. On a $100 bet that is $11.40 more in your pocket for the same wager, won or lost the same way. That difference is the entire reason this page exists.
What is the spread and total for Seattle Mariners vs Houston Astros?
The consensus spread is -1.5 on Houston Astros with the best juice at +175 (Hard Rock Bet), and the consensus total is 8.5 with the best Over price at +105 (Hard Rock Bet). Consensus means the line most books agree on; the flagged price is the best juice available at that same number.
How often do these MLB odds update?
The free board rescans every hour from 7am to 9pm ET; Live Beta, free with an email signup during the beta, refreshes every minute. This page was last scanned August 13, 5:05 PM ET, and that timestamp is shown above the table.
Does The Odds Gap pick a side on Seattle Mariners vs Houston Astros?
No. There is no model, no projection, and no lean anywhere on this site. We show which book pays the most on a bet you have already decided to make. Math, not picks.
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