Mariners vs. Astros Odds & Betting Predictions - May 12, 2026

Mariners at Astros

12:10 am • SCHN

Seattle Mariners

41-39

3 - 1

Houston Astros

38-43

pitcher		team	era	w-l
P.Lambert			3.23	6-4
G.Kirby			4.10	5-7

MatchupOpenSpreadTotalMoneyline
Mariners 41-39	-1.5	-1.5+110	o8.5-119	-155
Astros 38-43	u8.5	+1.5-131	u8.5+100	+130

Tuesday 12:10 a.m.

May 12, 2026

Daikin ParkHouston

Under 7.5 (Live)+110

1.1u

Under 8.5 (Live)-125

SEA -2.5+185

0.28u

#EV 2.04%

HOU u2.5+200

0.54u

#EV 2.15%

G.Kirby u2.5 Earned Runs-148

C.Vazquez o0.5 Total Bases-115

0.53u

#EV 4.27%

HOU +125

Over 8.5-110

Join Discord for earlier access: https://discord.gg/HjKxYKdSUy This is a dome total at 8.5, so weather is not helping the under. Lambert has a 2.42 ERA, but 11 walks in 22.1 innings gives Seattle a traffic path. Kirby is cleaner at 2.94, but 39 strikeouts in 52 innings leaves Houston enough contact to push this toward 9.

J.Rodriguez o1.5 Total Bases-105

$1.00

J.Rodriguez o0.5 HR+490

1.23u

C.Raleigh o0.5 HR+350

0.25u

P.Lambert o4.5 Ks-140

HOU +123

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No props found

MLB Public Betting

Astros are 3-2 in their last 5 games.
Astros are 2-3 in their last 5 games against the spread
Astros are 19-21 in their road games against the spread
The totals have gone OVER in 3 of Astros' last 5 games
The totals have gone OVER in 24 of Astros' 41 last games at home

Against the Spread (ATS) History

	overall	home	away	favorite	underdog
Astros	38-43	19-22	19-21	8-18	29-24
Mariners	30-50	15-26	15-24	28-46	2-4

Over/Under History

	overall	home o/u	away o/u	favorite o/u	underdog o/u
Astros	42-35-4	24-16-1	18-19-3	15-11	26-23-4
Mariners	37-40-3	19-21-1	18-19-2	35-36-3	2-4

Straight-Up (ML) History

	overall	home	away	favorite	underdog
Astros	38-43	20-21	18-22	11-15	26-27
Mariners	41-39	22-19	19-20	39-35	2-4

date	opponent	score	spread	over/under	moneyline
May 10th	@CIN	L 0-5	-	U 9.5	CIN -108
May 9th	@CIN	L 1-3	+1.5 L	U 8.5	CIN +135
May 8th	@CIN	W 10-0	+1.5 W	O 9	HOU +109
May 6th	LAD	L 2-12	+1.5 L	O 8.5	LAD +180
May 6th	LAD	W 2-1	+1.5 W	U 8.5	HOU +184

Lance McCullers
SP
Lance McCullers Jr. has been scratched Tuesday. Jason Alexander will start.
Out

See more MLB Injuries

PITCHER	PC	IP	K	ER
RG.Kirby, P	99	5	7	1
RN.Davila, P	14	1	1	0
RC.Criswell, P	13	1	1	0
RE.Bazardo, P	17	1	3	0
RA.Munoz, P	14	1	1	0

HITTERS	H-AB	R	HR	RBI
1B.Donovan, 3B	0-4	0	0	0
2J.Rodriguez, CF	2-4	1	1	1
3J.Naylor, 1B	0-4	0	0	0
4C.Raleigh, C	0-4	0	0	0
5R.Arozarena, LF	2-4	1	0	0
6L.Raley, RF	0-2	1	0	0
6R.Refsnyder, PH	1-1	0	0	0
6C.Joe, RF	0-0	0	0	0
7J.Crawford, SS	0-4	0	0	0
8D.Canzone, DH	1-3	0	0	1
9C.Young, 2B	1-3	0	0	1

PITCHER	PC	IP	K	ER
RP.Lambert, P	96	7	6	3
LS.Okert, P	12	1	1	0
LB.King, P	15	1	0	0

HITTERS	H-AB	R	RBI
1J.Altuve, 2B	3-5	1	0
2Y.Alvarez, DH	1-5	0	0
3I.Paredes, 3B	3-4	0	1
4C.Walker, 1B	0-3	0	0
5Z.Cole, LF	0-4	0	0
6C.Smith, RF	0-2	0	0
7B.Matthews, CF	0-4	0	0
8B.Shewmake, SS	1-4	0	0
9C.Vazquez, C	1-3	0	0
9Z.Dezenzo, PH	0-1	0	0