Chicago Cubs @ Seattle Mariners
August 21, 2026 · 10:11 PM ET
This page is the August 21, 2026 meeting. See the current Chicago Cubs @ Seattle Mariners page →
Chicago Cubs 5 Seattle Mariners 6 Final
Novig paid the most on Seattle Mariners at -102, against -115 at theScore Bet. Same bet, same result: $11.08 more profit on a $100 stake, out of the 14 books that priced it.
Pregame Line History
Moneyline Line History
Spread Line History
Total Line History
About These Charts
Closing Moneyline last quotes before start
Closing prices as of August 21, 10:08 PM ET. These do not move again. Today's MLB odds.
| Book | Chicago Cubs | Seattle Mariners |
|---|---|---|
| Polymarket US | +102 | -104 |
| FanDuel | +100 | -108 |
| Novig | +100 | -102 |
| Pinnacle | -101 | -107 |
| ProphetX | -102 | -104 |
| BetRivers | -105 | -109 |
| Caesars | -105 | -105 |
| DraftKings | -105 | -102 |
| Hard Rock Bet | -105 | -105 |
| theScore Bet | -105 | -115 |
| Kalshi | -107 | -111 |
| LowVig | -107 | -103 |
| Bally Bet | -108 | -113 |
| BetParx | -108 | -113 |
| Bovada | -108 | -112 |
| MyBookie | -109 | -108 |
| BetMGM | -110 | -110 |
| Fanatics | -110 | -110 |
| BetOnline | -112 | +102 |
| Fliff | -115 | -105 |
Closing Spread best flagged at -1.5 / +1.5
| Book | Chicago Cubs | Seattle Mariners |
|---|---|---|
| Polymarket US | -1.5 +170 | +1.5 -174 |
| FanDuel | -1.5 +158 | +1.5 -192 |
| Novig | -1.5 +167 | +1.5 -174 |
| Pinnacle | -1.5 +160 | +1.5 -191 |
| ProphetX | -1.5 +167 | +1.5 -178 |
| BetRivers | -1.5 +155 | +1.5 -195 |
| Caesars | -1.5 +143 | +1.5 -199 |
| DraftKings | -1.5 +155 | +1.5 -188 |
| Hard Rock Bet | -1.5 +170 | +1.5 -180 |
| theScore Bet | -1.5 +160 | +1.5 -190 |
| Kalshi | -1.5 +152 | +1.5 -189 |
| Bally Bet | -1.5 +155 | +1.5 -195 |
| BetParx | -1.5 +155 | +1.5 -195 |
| Bovada | -1.5 +150 | +1.5 -200 |
| MyBookie | -1.5 +154 | +1.5 -182 |
| BetMGM | -1.5 +154 | +1.5 -190 |
| Fanatics | -1.5 +150 | +1.5 -185 |
| Fliff | -1.5 +145 | +1.5 -195 |
Closing Total best flagged at 7.5
| Book | Over | Under |
|---|---|---|
| Polymarket US | 7.5 -108 | 7.5 +104 |
| FanDuel | 7.5 -124 | 7.5 +102 |
| Novig | 7.5 -106 | 7.5 +104 |
| Pinnacle | 7.5 -114 | 7.5 +102 |
| ProphetX | 7.5 -108 | 7.5 +102 |
| BetRivers | 8 -105 | 8 -115 |
| Caesars | 7.5 -115 | 7.5 -105 |
| DraftKings | 7.5 -113 | 7.5 -106 |
| Hard Rock Bet | 7.5 -115 | 7.5 +105 |
| theScore Bet | 7.5 -120 | 7.5 +100 |
| Kalshi | 7.5 -115 | 7.5 -103 |
| LowVig | 7.5 -106 | 7.5 -108 |
| Bally Bet | 8 -105 | 8 -115 |
| BetParx | 8 -105 | 8 -115 |
| Bovada | 7.5 -120 | 7.5 +100 |
| MyBookie | 7.5 -117 | 7.5 -104 |
| BetMGM | 7.5 -110 | 7.5 -110 |
| Fanatics | 7.5 -115 | 7.5 -105 |
| BetOnline | 7.5 -109 | 7.5 -111 |
| Fliff | 7.5 -120 | 7.5 -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.
- Chicago Cubs: PINN earliest -101, closed +100 (longer)
- Seattle Mariners: PINN earliest -107, closed -102 (longer)
Moneyline Movement
Best shoppable US-book price at each scan, from open to close. Excludes the exchanges, Pinnacle and the offshore books.
About These Closing Odds
Every price on this page is a book's own last quote strictly before Chicago Cubs 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. 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.
For today's games, open the MLB board or the Line Shop.
Cite this page: https://theoddsgap.com/odds/mlb/chicago-cubs-vs-seattle-mariners, final August 21, 2026.
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