Cubs vs Mariners Odds: Moneyline, Over/Under, Props - August 21, 2026

Cubs at Mariners

2:10 am • SEAM

Chicago Cubs

0-2

5 - 6

Seattle Mariners

0-0

pitcher		team	era	w-l
E.Hancock			3.57	7-8
M.Boyd			3.91	10-5

MatchupOpenSpreadTotalMoneyline
Cubs 0-2	-1.5	-1.5+202	o7.5-124	-104
Mariners 0-0	u8	+1.5-189	u7.5+100	-107

Saturday 2:10 a.m.

August 22, 2026

T-Mobile ParkSeattle

SEA -105

0.25u

Bet to -115. Split with F5

SEA -108 (F5)

0.25u

Bet to -125. Split with Full Game

CHC -102

1.02u

SEA -105

M.Boyd u17.5 Outs+114

0.44u

P.Crow-Armstrong o0.5 HR+350

0.88u

CHC -104

1.04u

SEA -105

5 plays on the Card today

CHC -102

1.02u

E.Hancock o2.5 Earned Runs+105

SEA -105

0.95u

@Tannerstruth ⭐️⭐️⭐️ https://myaction.app/prPHdFsQM5b

M.Boyd o4.5 Ks-117

0.85u

J.Rodriguez o0.5 HR+455

0.25u

M.Boyd o1.5 BB+111

1.11u

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MLB Public Betting

Mariners are 3-2 in their last 5 games.
Mariners are 2-3 in their last 5 games against the spread
Mariners are 27-54 in their road games against the spread
The totals have gone OVER in 5 of Mariners' last 5 games
The totals have gone OVER in 41 of Mariners' 81 last games at home

Against the Spread (ATS) History

	overall	home	away	favorite	underdog
Mariners	57-105	30-51	27-54	43-82	12-23
Cubs	76-85	34-47	42-38	48-64	27-20

Over/Under History

	overall	home o/u	away o/u	favorite o/u	underdog o/u
Mariners	85-70-7	41-36-4	44-34-3	63-56-6	22-12-1
Cubs	89-71-1	45-35-1	44-36	62-49-1	26-21

Straight-Up (ML) History

	overall	home	away	favorite	underdog
Mariners	76-86	43-38	33-48	62-63	12-23
Cubs	89-73	46-35	42-38	63-49	23-24

date	opponent	score	spread	over/under	moneyline
Aug 20th	@MIL	L 4-7	+1.5 L	O 8.5	MIL +126
Aug 19th	@MIL	W 7-5	-1.5 W	O 7.5	SEA +107
Aug 18th	@MIL	L 0-22	+1.5 L	O 7.5	MIL +151
Aug 16th	@HOU	W 3-2	+1.5 W	U 7.5	SEA +113
Aug 15th	@HOU	W 10-5	+1.5 W	O 8.5	SEA +110

Tyler Austin
1B
Austin is out with knee
Out
Justin Steele
SP
Steele is out with elbow
Out

See more MLB Injuries

PITCHER	PC	IP	K	ER
LM.Boyd, P	86	6	3	4
RD.Palencia, P	10	1	2	0
RC.Rea, P	19	1	1	0
RJ.Webb, P	11	1	1	0
RR.Zeferjahn, P	7	0.2	0	0

HITTERS	H-AB	R	HR	RBI
1P.Crow-Armstrong, CF	1-4	1	1	1
2S.Suzuki, RF	1-5	0	0	0
3M.Busch, 1B	2-5	1	0	0
4A.Bregman, 3B	3-5	2	2	3
5I.Happ, LF	2-5	1	1	1
6N.Hoerner, SS	1-5	0	0	0
7P.Ramirez, 2B	0-4	0	0	0
8M.Conforto, DH	0-4	0	0	0
9C.Kelly, C	2-5	0	0	0

PITCHER	PC	IP	K	ER
RE.Hancock, P	98	5.2	6	3
LG.Speier, P	17	1.1	1	0
RE.Bazardo, P	20	1	1	1
RA.Munoz, P	18	1	2	1
RS.Dominguez, P	14	1	1	0

HITTERS	H-AB	R	HR	RBI
1B.Donovan, 3B	2-5	0	0	1
2R.Arozarena, LF	1-5	1	0	1
3D.Canzone, RF	0-4	0	0	0
3V.Robles, RF	0-0	0	0	0
4J.Rodriguez, CF	1-5	0	0	0
5J.Naylor, 1B	1-4	1	0	0
6T.Ward, DH	0-2	1	0	0
6L.Rivas, PR	1-1	0	0	1
6L.Rivas, DH	1-1	0	0	1
7C.Raleigh, C	1-4	1	1	3
8C.Young, 2B	1-3	1	0	0
9B.Rodden, SS	0-4	1	0	0