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
BetOnline paid the most on Seattle Mariners at +102, against -115 at theScore Bet. Same bet, same result: $15.04 more profit on a $100 stake, out of the 20 books that priced it.
Closing Moneyline last quotes before start
| 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 |
Where the line opened, and where it closed
The opening number is captured once from the odds archive, so it is a price that was actually posted rather than a reconstruction.
- Chicago Cubs: opened -101, closed +102 (longer)
- Seattle Mariners: opened -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.
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