Seattle Mariners @ Colorado Rockies

September 18, 2026 · 8:11 PM ET

This page is the September 18, 2026 meeting. See the current Seattle Mariners @ Colorado Rockies page →

Seattle Mariners 5 Colorado Rockies 4 Final

Novig paid the most on Seattle Mariners at -170, against -192 at DraftKings. Same bet, same result: $6.74 more profit on a $100 stake, out of the 13 books that priced it.

Closing Moneyline last quotes before start

Closing prices as of September 18, 8:08 PM ET. These do not move again. Today's MLB odds.

Book	Seattle Mariners	Colorado Rockies
Novig	-170	+163
ProphetX	-173	+161
Polymarket US	-178	+174
Pinnacle	-179	+164
BetRivers	-180	+150
BetOnline	-181	+163
LowVig	-181	+163
Bally Bet	-182	+148
BetParx	-182	+148
Kalshi	-182	+158
FanDuel	-186	+156
BetMGM	-190	+154
Bovada	-190	+156
Caesars	-190	+156
Fanatics	-190	+155
Hard Rock Bet	-190	+160
theScore Bet	-190	+160
DraftKings	-192	+158
Fliff	-205	+165

Closing Spread best flagged at -1.5 / +1.5

Book	Seattle Mariners	Colorado Rockies
Novig	-1.5 -111	+1.5 +108
ProphetX	-1.5 -112	+1.5 +105
Polymarket US	-1.5 -115	+1.5 +113
Pinnacle	-1.5 -117	+1.5 +106
BetRivers	-1.5 -118	+1.5 -104
BetOnline	-1.5 -120	+1.5 +100
LowVig	-1.5 -117	+1.5 +103
Bally Bet	-1.5 -118	+1.5 -104
BetParx	-1.5 -118	+1.5 -104
Kalshi	-1.5 -125	+1.5 +104
FanDuel	-1.5 -125	+1.5 +104
BetMGM	-1.5 -120	+1.5 +100
Bovada	-1.5 -120	+1.5 +100
Caesars	-1.5 -122	+1.5 +104
Fanatics	-1.5 -120	+1.5 +100
Hard Rock Bet	-1.5 -120	+1.5 +100
theScore Bet	-1.5 -125	+1.5 +105
DraftKings	-1.5 -120	+1.5 +100
Fliff	-1.5 -130	+1.5 +100

Closing Total best flagged at 10.5

Book	Over	Under
Novig	10.5 -102	10.5 +100
ProphetX	10.5 -107	10.5 -102
Polymarket US	10.5 -104	10.5 +102
Pinnacle	10.5 -110	10.5 -102
BetRivers	10.5 -115	10.5 -106
BetOnline	10.5 -115	10.5 -105
LowVig	10.5 -113	10.5 -102
Bally Bet	10.5 -115	10.5 -106
BetParx	10.5 -115	10.5 -106
Kalshi	10.5 -111	10.5 -107
FanDuel	10.5 -115	10.5 -105
BetMGM	10.5 -115	10.5 -105
Bovada	10.5 -115	10.5 -105
Caesars	10.5 -113	10.5 -105
Fanatics	10.5 -115	10.5 -105
Hard Rock Bet	10.5 -115	10.5 -105
theScore Bet	10.5 -115	10.5 -105
DraftKings	10.5 -114	10.5 -105
Fliff	10.5 -115	10.5 -110

Where Pinnacle's line opened, and where it closed

This game was listed before Pinnacle priced it, so the number below is Pinnacle's earliest price on it rather than the first number anyone posted. It was actually posted, it is stamped with its own time, and the market may already have moved before it existed.

Seattle Mariners: PINN open -187, closed -180 (longer)
Colorado Rockies: PINN open +167, closed +160 (shorter)

Moneyline movement

Seattle Mariners Colorado Rockies

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 Seattle Mariners and Colorado Rockies 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. 19 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/seattle-mariners-vs-colorado-rockies, final September 18, 2026.