Tampa Bay Rays @ Seattle Mariners
Final August 9, 2026 · 4:11 PM ET
Rays -1.5: covered · Total 7.5: under
How the Odds Moved, Open to Close
The best moneyline at each scan, from the first price we saw on Aug 9 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 -108 on Aug 9, closed at -105.
The earliest price we can prove, and where it closed
This game was already listed when our search window opened, so the number below is the earliest one we have on record rather than the opening line. It was captured once from the odds archive and actually posted.
- Tampa Bay Rays: PINN earliest -102, closed -103 (shorter)
- Seattle Mariners: PINN earliest -108, closed -105 (longer)
Novig paid the most on the Rays at +100. $100 there made $9.09 more than at BetMGM (-110).
Closing Odds at Every Book
Closing prices as of August 9, 4:08 PM ET. These do not move again.
Closing Moneyline
| Book | Tampa Bay Rays | Seattle Mariners |
|---|---|---|
| Novig | +100 | -102 |
| Polymarket US | +100 | -102 |
| ProphetX | -102 | -104 |
| FanDuel | -102 | -106 |
| DraftKings | -104 | -104 |
| Caesars | -107 | -103 |
| Hard Rock Bet | -105 | -105 |
| BetRivers | -105 | -109 |
| Kalshi | -107 | -111 |
| Fanatics | -105 | -115 |
| BetMGM | -110 | -110 |
| theScore Bet | -110 | -110 |
| Bally Bet | -108 | -113 |
| BetParx | -108 | -113 |
| BetOnline | -104 | -106 |
| LowVig | -104 | -106 |
| MyBookie | -107 | -110 |
| Bovada | -109 | -111 |
| Fliff | -115 | -110 |
Closing Spread best flagged at -1.5 / +1.5
| Book | Tampa Bay Rays | Seattle Mariners |
|---|---|---|
| Novig | -1.5 +174 | +1.5 -178 |
| Polymarket US | -1.5 +174 | +1.5 -178 |
| ProphetX | -1.5 +172 | +1.5 -184 |
| Hard Rock Bet | -1.5 +170 | +1.5 -180 |
| FanDuel | -1.5 +168 | +1.5 -205 |
| theScore Bet | -1.5 +165 | +1.5 -200 |
| DraftKings | -1.5 +160 | +1.5 -196 |
| Kalshi | -1.5 +158 | +1.5 -189 |
| Fanatics | -1.5 +160 | +1.5 -200 |
| BetRivers | -1.5 +160 | +1.5 -205 |
| Bally Bet | -1.5 +160 | +1.5 -205 |
| BetParx | -1.5 +160 | +1.5 -205 |
| BetMGM | -1.5 +155 | +1.5 -190 |
| Caesars | -1.5 +146 | +1.5 -204 |
| MyBookie | -1.5 +160 | +1.5 -189 |
| Bovada | -1.5 +155 | +1.5 -210 |
| Fliff | -1.5 +150 | +1.5 -205 |
Closing Total best flagged at 7.5
| Book | Over | Under |
|---|---|---|
| Polymarket US | 7.5 +113 | 7.5 -115 |
| Novig | 7.5 +113 | 7.5 -117 |
| ProphetX | 7.5 +109 | 7.5 -118 |
| Hard Rock Bet | 7.5 +110 | 7.5 -120 |
| Fanatics | 7.5 +105 | 7.5 -125 |
| Caesars | 7.5 +105 | 7.5 -125 |
| BetMGM | 7.5 +105 | 7.5 -125 |
| theScore Bet | 7.5 +105 | 7.5 -125 |
| Kalshi | 7.5 +104 | 7.5 -125 |
| BetRivers | 7.5 +102 | 7.5 -122 |
| Bally Bet | 7.5 +102 | 7.5 -122 |
| BetParx | 7.5 +102 | 7.5 -122 |
| DraftKings | 7.5 +104 | 7.5 -126 |
| FanDuel | 7.5 +102 | 7.5 -124 |
| LowVig | 7.5 +107 | 7.5 -123 |
| BetOnline | 7.5 +105 | 7.5 -125 |
| MyBookie | 7.5 +102 | 7.5 -125 |
| Fliff | 7.5 +100 | 7.5 -130 |
| Bovada | 7 -125 | 7 +105 |
About These Closing Odds
Every price on this page is a book's own last quote strictly before Tampa Bay Rays 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/tampa-bay-rays-vs-seattle-mariners, final August 9, 2026.
Previous Meetings
- Aug 8, 2026: Tampa Bay Rays 3, Seattle Mariners 2 · closing moneyline +126 / -130
- Aug 7, 2026: Tampa Bay Rays 2, Seattle Mariners 1 · closing moneyline +102 / -108
Trends for This Game
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