bayesRatings

Astros at Mariners

MLB · Saturday, Apr 11 · 8:40 PM CT · T-Mobile Park · Final HOU 7 – SEA 8

Final Box Score

from the game summary
Team123456789THE
HOU0331000007171
SEA200050001870
Team box
HOU·SEA
17
hits
7
1
home runs
2
4
walks
7
9
strikeouts
8
175
pitches thrown
184
1
errors
0
Top hitters
PlayerTeamH-ABRHRRBI
Cam SmithHOU4-5102
Yordan AlvarezHOU3-6111
Julio RodriguezSEA2-4112
Cal RaleighSEA1-3113
Taylor TrammellHOU2-4103
J.P. CrawfordSEA2-3203
Pitchers
PitcherTeamIPHERBBK
Lance McCullers Jr.HOU4.15624
Bryan Abreu (L)HOU0.11131
Luis CastilloSEA3.110713
Andres Munoz (W)SEA1.01021

For context, not in our forecast.

Game Flow

score margin
SEA +5
HOU +5
123456789
largest lead: SEA 2 · HOU 5lead changes: 2

For context, not in our forecast.

Final · our forecast was HOU 46%, SEA 54% · Updated Apr 11

Expected margin
Even
Expected score
SEA 4.4 – 4.1 HOU
Expected total
8.5
AstrosThe matchupMariners
+116Our fair odds−116
4.1Expected runs4.4
+0.02Power rating+0.07
6.1Runs / game3.5
6.2Allowed / game3.4
9.3Hits / game6.2
1.21Home runs / game0.86
5.1Walks drawn / game4.2
6−8Season record5−9
4−6Last 103−7

Prediction markets

Kalshi · Polymarket US · ProphetX · Novig
HOU chance · SEA chance
Our model fair46.3%53.7%
Kalshi43.7%60.7%
Polymarket USno two-sided price
ProphetXno two-sided price
Novigno two-sided price
Full price table
TeamOur modelfairKalshipre-game · 8:40 PM CTPolymarket US ProphetX Novig 
Moneyline
HOUHouston Astros+11646%+12943.7%———
SEASeattle Mariners−11654%−15460.7%———
Spreadabout even
HOUHouston Astros+0.3our margin————
SEASeattle Mariners−0.3our margin————
Totalwe expect 8.5
Over8.5our total————
Under8.5our total————

These are each venue’s last prices before the start (Kalshi’s moneyline: its pre-game close). Odds are the price to buy that side now, taker fee included; the small percent is the implied chance of that same price. Highlighted is the best price in the row among venues on the same line. — means not listed (hover or tap for why). A market price is not the true chance of winning.

Margin range

Even game expected
Houston Astros by 13 runs: <1%Houston Astros by 12 runs: <1%Houston Astros by 11 runs: <1%Houston Astros by 10 runs: 1%Houston Astros by 9 runs: 1%Houston Astros by 8 runs: 1%Houston Astros by 7 runs: 2%Houston Astros by 6 runs: 3%Houston Astros by 5 runs: 4%Houston Astros by 4 runs: 5%Houston Astros by 3 runs: 7%Houston Astros by 2 runs: 10%Houston Astros by 1 run: 13%Seattle Mariners by 1 run: 16%Seattle Mariners by 2 runs: 10%Seattle Mariners by 3 runs: 7%Seattle Mariners by 4 runs: 6%Seattle Mariners by 5 runs: 4%Seattle Mariners by 6 runs: 3%Seattle Mariners by 7 runs: 2%Seattle Mariners by 8 runs: 2%Seattle Mariners by 9 runs: 1%Seattle Mariners by 10 runs: 1%Seattle Mariners by 11 runs: <1%Seattle Mariners by 12 runs: <1%Seattle Mariners by 13 runs: <1%
← HOU wins bySEA wins by →
Seattle Mariners wins by 2 or more38%
Seattle Mariners wins by 3 or more28%
Houston Astros wins by 2 or more33%
Decided by one run29%

Centered on the expected margin above; shape from each team's expected runs, with ties after nine settled as one-run games, matched to 14,698 past MLB games.

Total range

8.5 expected
1 runs: 2%2 runs: 2%3 runs: 7%4 runs: 5%5 runs: 11%6 runs: 8%7 runs: 12%8 runs: 8%9 runs: 10%10 runs: 6%11 runs: 8%12 runs: 4%13 runs: 5%14 runs: 3%15 runs: 3%16 runs: 2%17 runs: 2%18 runs: 1%19 runs: 1%20 runs: <1%21 runs: <1%22 runs: <1%
Total runs, both teams
Total over 6.565%
Total over 8.546%
Total over 10.529%
Total from 7 to 1037%

Centered on the expected total above; shape from each team's expected runs, with ties after nine settled as one-run games, matched to 14,698 past MLB games.

Starting Pitchers

from the box score
HOULance McCullers Jr. SP · last 3 starts: 14.0 IP, 3.21 ERA, 17 Kstarted
SEALuis Castillo SP · last 3 starts: 12.0 IP, 4.50 ERA, 12 Kstarted

Starting pitchers are part of our forecast.

Rest and Schedule

before this game
HOU·SEA
Apr 10 at SEA
last game
Apr 10 vs HOU
0 days
days of rest
0 days
6
games in last 7 days
6
8th straight road game
home / road
2nd straight home game

For context, not in our forecast.

Team Comparison

2026 season · box-score averages from 14+ games
HOU·SEA
+0.02
rating (0 = average)
+0.07
6.1
runs / game
3.5
6.2
runs allowed / game
3.4
6−8
season record
5−9
5−2
home record
4−4
1−6
away record
1−5
L5
streak
W1
4−6
last 10
3−7
9.3
hits / game
6.2
1.21
home runs / game
0.86
5.1
walks drawn / game
4.2
7.6
batter strikeouts / game
10.2
9.9
pitcher strikeouts / game
8.9
0.29
errors / game
0.57

Rating Trend

HOU · SEA · 17 days
Houston AstrosSeattle Mariners
Rating (0 = average team)

Head to Head

last 10 meetings · SEA 7−3
Apr 10at SEASEA 9 − 6
Sep 21, 2025at HOUSEA 7 − 3
Sep 20, 2025at HOUSEA 6 − 4
Sep 19, 2025at HOUSEA 4 − 0
Jul 20, 2025at SEAHOU 11 − 3
Jul 19, 2025at SEASEA 7 − 6
Jul 18, 2025at SEASEA 6 − 1
May 25, 2025at HOUHOU 5 − 3
May 24, 2025at HOUHOU 2 − 1
May 23, 2025at HOUSEA 5 − 3

HOU · Last 10

4−6 · streak L5
Apr 10at SEA6 − 9L
Apr 8at COL1 − 9L
Apr 7at COL1 − 5L
Apr 6at COL7 − 9L
Apr 5at ATH10 − 12L
Apr 4at ATH11 − 0W
Apr 3at ATH4 − 11L
Apr 1vs BOS6 − 4W
Mar 31vs BOS9 − 2W
Mar 30vs BOS8 − 1W

SEA · Last 10

3−7 · streak W1
Apr 10vs HOU9 − 6W
Apr 8at TEX0 − 3L
Apr 7at TEX2 − 3L
Apr 6at TEX1 − 2L
Apr 5at LAA7 − 8L
Apr 4at LAA0 − 1L
Apr 3at LAA3 − 1W
Apr 1vs NYY3 − 5L
Mar 31vs NYY0 − 5L
Mar 30vs NYY2 − 1W