Tampa Bay Rays vs Seattle Mariners Odds
Best MLB price on Tampa Bay Rays vs Seattle Mariners, compared across every major US sportsbook plus Kalshi, Polymarket, and ProphetX. Fri Aug 7, 9:46 PM ET.
Odds from the latest scan: August 6, 8:41 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 | Tampa Bay Rays | Seattle Mariners |
|---|---|---|
| Polymarket | -103 | -107 |
| Fliff | -110 | -110 |
| Hard Rock Bet | +100 | -110 |
| BetOnline | +100 | -110 |
| LowVig | +100 | -110 |
| Kalshi | -107 | -111 |
| Pinnacle | +104 | -114 |
| Caesars | -105 | -115 |
| FanDuel | -102 | -116 |
| MyBookie | +100 | -117 |
| ProphetX | +100 | -117 |
| BetRivers | +100 | -118 |
| BetParx | -103 | -118 |
| Bally Bet | -103 | -118 |
| DraftKings | -102 | -118 |
| Bovada | -102 | -118 |
| theScore Bet | +100 | -120 |
17 books priced this game. Prediction market prices (Kalshi, Polymarket, ProphetX) include trading fees, so they are directly comparable to sportsbook lines.
On Tampa Bay Rays vs Seattle Mariners, 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 Tampa Bay Rays vs Seattle Mariners odds
The cards above show the best moneyline price on each side and which book has it. The spread line shows Seattle Mariners 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 17 books quoting this side, the best price is +104 at Pinnacle and the worst is -110 at Fliff. Same bet, same outcome, $13.09 difference in profit on a $100 stake. Nothing about the wager changes, only where you place it.
- Tampa Bay Rays: best +104 (Pinnacle), worst -110 (Fliff)
- Seattle Mariners: best -107 (Polymarket), worst -120 (theScore Bet)
Where This Line Opened
We capture the opening number once from the historical archive, so this is the price that was actually posted at Pinnacle, not a reconstruction.
- Seattle Mariners: opened -114, now -107 (7 cents longer)
- Tampa Bay Rays: opened +104, now +104
The charts above plot every scan since, so you can see whether the move came in one step or drifted.
Tampa Bay Rays vs Seattle Mariners Odds: Common Questions
Who has the best odds on Tampa Bay Rays vs Seattle Mariners?
At the latest scan Pinnacle pays the most on Tampa Bay Rays at +104, and Polymarket pays the most on Seattle Mariners at -107. 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 17 books price this side, and the spread between the best and worst of them is +104 at Pinnacle versus -110 at Fliff. On a $100 bet that is $13.09 more in your pocket for the same wager, won or lost the same way. That difference is the entire reason this page exists.
Where did the Tampa Bay Rays vs Seattle Mariners line open?
Seattle Mariners opened -114 at Pinnacle and is -107 now. We capture the opener once from the historical archive rather than inferring it, so the number on this page is the price that was actually posted, and the movement charts above plot every scan since.
What is the spread and total for Tampa Bay Rays vs Seattle Mariners?
The consensus spread is +1.5 on Seattle Mariners with the best juice at -195 (Hard Rock Bet), and the consensus total is 7 with the best Over price at -107 (LowVig). 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 6, 8:41 PM ET, and that timestamp is shown above the table.
Does The Odds Gap pick a side on Tampa Bay Rays vs Seattle Mariners?
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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