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Seattle Mariners at Boston Red Sox odds

Seattle
Mariners
SM rating 1495 · #15
8 – 3
Final
Red Sox -1.5 did not cover
Over 8.5
vs the most common closing line
Wednesday, September 2
4:10 PM ET
Fenway Park
Boston
Red Sox
SM rating 1530 · #8
SEA 42%BOS 58%
Fair moneyline
+140 / -140
SEA / BOS, no vig
Market win %
43% / 57%
No-vig average of the books
Model vs market
BOS +1 pts
SharpModels 58% · market 57% (no vig)
Ratings
1495 / 1530
SEA / BOS, SharpModels

SharpModels is a benchmark built only from team ratings: it doesn't see injuries, rest or lineup news. When it and the market disagree, the market often knows something.

Closing lines

This game was played before we started collecting prices (22 October 2026), so we have its closing prices only, from DraftKings, BetMGM and bet365: no line movement or player props. A price can differ from the book's own by a cent or two.

MarketBest
Mariners
Moneyline
+125
BetMGM
+123 +125 +125
Red Sox
Moneyline
-149
BetMGM
-149 -149 -149
Mariners
Spread
+1-125
DraftKings
+1-125 +1.5-175 +1.5-164
Red Sox
Spread
-1.5+145
BetMGM
-1-105 -1.5+145 -1.5+140
Over
Total
8.5-105
BetMGM
8.5-108 8.5-105 8.5-105
Under
Total
8.5-112
DraftKings
8.5-112 8.5-115 8.5-115
Margin
Moneyline
4.1% 4.5%4.1%4.1%

Margin: how much a book builds into its moneyline (its implied chances add up to more than 100%). Lower is fairer; the lowest is in green. Under Best, the margin if you took the best price on each side.

Every price change, book by book: tap the table icon by any selection, line, team total or player.

Best spread and total weigh the line against the price: a better line is worth paying a little more for, most of all onto key numbers (half a point is worth more where games often land). Moneyline: simply the best price.

Alternate lines

BOS line
-5
SEA +5
+620-1429 - -
-4.5
SEA +4.5
+461-833 - -
-4
SEA +4
+432-714 - -
-3.5
SEA +3.5
+314-476 +333-500 -
-3
SEA +3
+285-417 - -
-2.5
SEA +2.5
+211-294 +220-303 -
-2
SEA +2
+182-250 - -
-1.5
SEA +1.5
+142-172 +145-175 +140-164
-1
SEA +1
-105-125 - -
+1
SEA -1
-217+161 - -
+1.5
SEA -1.5
-263+191 -250+185 -
+2
SEA -2
-385+262 - -
+2.5
SEA -2.5
-435+293 -417+290 -
+3
SEA -3
-667+404 - -
+3.5
SEA -3.5
-714+434 -714+425 -
+4
SEA -4
-1250+600 - -
+4.5
SEA -4.5
-1429+630 - -

Top number: BOS at that line; bottom: SEA at the opposite line. Gold = best top number.

Total
2.5
Over / Under
- -10000+1400 -
3
Over / Under
- -10000+1400 -
3.5
Over / Under
- -1667+725 -
4
Over / Under
- -1667+700 -
4.5
Over / Under
-833+460 -909+500 -
5
Over / Under
-714+416 -769+450 -
5.5
Over / Under
-385+265 -400+280 -
6
Over / Under
-345+242 -357+250 -
6.5
Over / Under
-256+188 -278+200 -
7
Over / Under
-213+157 -222+165 -
7.5
Over / Under
-152+116 -154+118 -
8
Over / Under
-132+101 -128+100 -
8.5
Over / Under
-108-112 -105-115 -105-115
9
Over / Under
+116-152 +120-154 -
9.5
Over / Under
+140-185 +145-189 -
10
Over / Under
+169-227 +175-238 -
10.5
Over / Under
+187-256 +200-278 -
11
Over / Under
+249-357 +250-357 -
11.5
Over / Under
+276-400 +290-417 -
12
Over / Under
+343-526 +350-526 -
12.5
Over / Under
+362-588 +375-588 -
13
Over / Under
- +500-909 -
13.5
Over / Under
- +525-909 -
14
Over / Under
- +650-1429 -

Top number: over; bottom: under. Gold = best top number.