bayesRatings

Astros at Mariners

MLB · Friday, Apr 10 · 8:40 PM CT · T-Mobile Park · Final HOU 6 – SEA 9

Final Box Score

from the game summary
Team123456789THE
HOU030000030680
SEA30002040990
Team box
HOU·SEA
8
hits
9
1
home runs
1
4
walks
10
6
strikeouts
10
191
pitches thrown
164
0
errors
0
Top hitters
PlayerTeamH-ABRHRRBI
Yordan AlvarezHOU2-3113
Randy ArozarenaSEA2-4113
Christian VazquezHOU2-3103
J.P. CrawfordSEA1-3101
Luke RaleySEA1-4101
Dominic CanzoneSEA1-4101
Pitchers
PitcherTeamIPHERBBK
Tatsuya ImaiHOU0.11340
Ryan Weiss (L)HOU2.14224
Emerson Hancock (W)SEA5.04325
Andres Munoz (S)SEA1.00021

For context, not in our forecast.

Game Flow

score margin
SEA +6
HOU +6
123456789
largest lead: SEA 6 · HOU 0lead changes: 0

For context, not in our forecast.

Final · our forecast was HOU 47%, SEA 53% · Updated Apr 10

Expected margin
Even
Expected score
SEA 4.4 – 4.0 HOU
Expected total
8.4
AstrosThe matchupMariners
+114Our fair odds−114
4.0Expected runs4.4
+0.02Power rating+0.06
6.1Runs / game3.1
6.0Allowed / game3.2
9.4Hits / game6.0
1.23Home runs / game0.85
5.2Walks drawn / game3.8
6−7Season record4−9
5−5Last 103−7

Prediction markets

Kalshi · Polymarket US · ProphetX · Novig
HOU chance · SEA chance
Our model fair46.7%53.3%
Kalshi46.7%58.7%
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+11447%+11446.7%———
SEASeattle Mariners−11453%−14258.7%———
Spreadabout even
HOUHouston Astros+0.3our margin————
SEASeattle Mariners−0.3our margin————
Totalwe expect 8.4
Over8.4our total————
Under8.4our 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 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: 14%Seattle Mariners by 1 run: 15%Seattle Mariners by 2 runs: 10%Seattle Mariners by 3 runs: 8%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%
← 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

8.4 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: 7%12 runs: 4%13 runs: 5%14 runs: 3%15 runs: 3%16 runs: 2%17 runs: 1%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 8.545%
Total over 10.528%
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
HOUTatsuya Imai SP · last 2 starts: 8.1 IP, 4.32 ERA, 13 Kstarted
SEAEmerson Hancock SP · last 3 starts: 16.2 IP, 0.54 ERA, 21 Kstarted

Starting pitchers are part of our forecast.

Rest and Schedule

before this game
HOU·SEA
Apr 8 at COL
last game
Apr 8 at TEX
1 day
days of rest
1 day
6
games in last 7 days
6
7th straight road game
home / road
home after a road game

For context, not in our forecast.

Team Comparison

2026 season · box-score averages from 13+ games
HOU·SEA
+0.02
rating (0 = average)
+0.06
6.1
runs / game
3.1
6.0
runs allowed / game
3.2
6−7
season record
4−9
5−2
home record
3−4
1−5
away record
1−5
L4
streak
L5
5−5
last 10
3−7
9.4
hits / game
6.0
1.23
home runs / game
0.85
5.2
walks drawn / game
3.8
7.8
batter strikeouts / game
10.2
9.9
pitcher strikeouts / game
9.2
0.31
errors / game
0.62

Rating Trend

HOU · SEA · 16 days
Houston AstrosSeattle Mariners
Rating (0 = average team)

Head to Head

last 10 meetings · SEA 6−4
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
May 22, 2025at HOUHOU 9 − 2

HOU · Last 10

5−5 · streak L4
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
Mar 29vs LAA9 − 7W

SEA · Last 10

3−7 · streak L5
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
Mar 29vs CLE8 − 0W