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Seattle Mariners at Kansas City Royals odds

Seattle
Mariners
SM rating 1495 · #15
0 – 5
Final
Mariners -1.5 did not cover
Under 8.5
vs the most common closing line
Saturday, May 23
4:10 PM ET
Kauffman Stadium
Kansas City
Royals
SM rating 1462 · #26
SEA 51%KC 49%
Fair moneyline
-106 / +106
SEA / KC, no vig
Market win %
54% / 46%
No-vig average of the books
Model vs market
KC +3 pts
SharpModels 49% · market 46% (no vig)
Ratings
1495 / 1462
SEA / KC, 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
-130
bet365
-132 -133 -130
Royals
Moneyline
+110
bet365
+108 +110 +110
Mariners
Spread
-1.5+125
bet365
-1-104 -1.5+125 -1.5+125
Royals
Spread
+1.5-149
bet365
+1-125 +1.5-154 +1.5-149
Over
Total
8.5+100
bet365
8-119 8.5+100 8.5+100
Under
Total
8.5-120
bet365
8-102 8.5-120 8.5-120
Margin
Moneyline
4.0% 4.7%4.5%4.0%

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

KC line
-4
SEA +4
+650-1429 - -
-3.5
SEA +3.5
+462-833 +475-833 -
-3
SEA +3
+432-714 - -
-2.5
SEA +2.5
+311-476 +325-500 -
-2
SEA +2
+283-417 - -
-1.5
SEA +1.5
+210-294 +210-286 -
-1
SEA +1
+163-217 - -
+1
SEA -1
-125-104 - -
+1.5
SEA -1.5
-156+128 -154+125 -149+125
+2
SEA -2
-217+160 - -
+2.5
SEA -2.5
-256+186 -250+185 -
+3
SEA -3
-345+244 - -
+3.5
SEA -3.5
-400+270 -400+280 -
+4
SEA -4
-556+361 - -
+4.5
SEA -4.5
-625+387 - -
+5
SEA -5
-1000+525 - -
+5.5
SEA -5.5
-1111+551 - -

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

Total
3
Over / Under
- -10000+1350 -
3.5
Over / Under
- -1667+700 -
4
Over / Under
- -1429+675 -
4.5
Over / Under
-833+466 -833+475 -
5
Over / Under
-714+419 -714+425 -
5.5
Over / Under
-370+261 -400+275 -
6
Over / Under
-333+237 -357+250 -
6.5
Over / Under
-250+184 -250+190 -
7
Over / Under
-204+152 -208+160 -
7.5
Over / Under
-145+111 -149+115 -
8
Over / Under
-119-102 -125-102 -
8.5
Over / Under
-104-125 +100-120 +100-120
9
Over / Under
+124-164 +125-167 -
9.5
Over / Under
+148-196 +154-200 -
10
Over / Under
+178-238 +185-250 -
10.5
Over / Under
+195-270 +200-278 -
11
Over / Under
+259-370 +270-385 -
11.5
Over / Under
+286-417 +300-455 -
12
Over / Under
+354-556 +375-588 -
12.5
Over / Under
+373-588 +400-625 -
13
Over / Under
- +525-909 -
13.5
Over / Under
- +550-1000 -
14
Over / Under
- +675-1429 -

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