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Chicago Cubs at Seattle Mariners odds

Chicago
Cubs
SM rating 1530 · #9
5 – 6
Final
Cubs -1 did not cover
Over 7.5
vs the most common closing line
Friday, August 21
10:10 PM ET
T-Mobile Park
Seattle
Mariners
SM rating 1495 · #15
CHC 51%SEA 49%
Fair moneyline
-104 / +104
CHC / SEA, no vig
Market win %
50% / 50%
No-vig average of the books
Model vs market
CHC +1 pts
SharpModels 51% · market 50% (no vig)
Ratings
1530 / 1495
CHC / SEA, 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
Cubs
Moneyline
-103
bet365
-104 -110 -103
Mariners
Moneyline
-104
DraftKings
-104 -110 -108
Cubs
Spread
-1.5+155
BetMGM
-1+120 -1.5+155 +1.5-222
Mariners
Spread
+1.5-189
BetMGM
+1-159 +1.5-189 -1.5+180
Over
Total
7.5-110
BetMGM
7.5-114 7.5-110 8-105
Under
Total
8-115
bet365
7.5-108 7.5-110 8-115
Margin
Moneyline
1.7% 1.9%4.5%2.6%

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

SEA line
-4.5
CHC +4.5
+600-1250 - -
-4
CHC +4
+572-1111 - -
-3.5
CHC +3.5
+410-667 +425-714 -
-3
CHC +3
+378-625 - -
-2.5
CHC +2.5
+269-385 +280-400 -
-2
CHC +2
+237-333 - -
-1.5
CHC +1.5
+172-233 +180-238 +180-222
-1
CHC +1
+130-172 - -
+1
CHC -1
-159+120 - -
+1.5
CHC -1.5
-192+156 -189+155 -
+2
CHC -2
-286+206 - -
+2.5
CHC -2.5
-333+237 -333+240 -
+3
CHC -3
-500+329 - -
+3.5
CHC -3.5
-556+361 -556+360 -
+4
CHC -4
-909+491 - -
+4.5
CHC -4.5
-1000+518 - -
+5
CHC -5
-2000+740 - -

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

Total
2
Over / Under
- -10000+1900 -
2.5
Over / Under
- -5000+1100 -
3
Over / Under
- -5000+1050 -
3.5
Over / Under
- -1111+575 -
4
Over / Under
- -1000+550 -
4.5
Over / Under
-588+377 -625+400 -
5
Over / Under
-500+331 -526+350 -
5.5
Over / Under
-294+209 -303+220 -
6
Over / Under
-256+187 -278+200 -
6.5
Over / Under
-196+147 -208+155 -
7
Over / Under
-156+120 -161+125 -
7.5
Over / Under
-114-108 -110-110 -125+105
8
Over / Under
+102-133 +105-139 -105-115
8.5
Over / Under
+118-156 +120-154 -
9
Over / Under
+153-204 +165-222 -
9.5
Over / Under
+179-244 +185-250 -
10
Over / Under
+221-312 +240-333 -
10.5
Over / Under
+241-345 +250-357 -
11
Over / Under
+333-500 +333-500 -
11.5
Over / Under
+364-588 +360-556 -
12
Over / Under
+462-833 +450-769 -
12.5
Over / Under
+483-833 +475-833 -
13
Over / Under
- +625-1250 -
13.5
Over / Under
- +625-1250 -

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