Away Team
Record 35-40
Last 5 2-3 last five
ATS 35-39-0 ATS
Road 13-21 road
Standings
MLB GAME PREVIEW
Schedule
First Pitch Countdown
0:38:55
Start Time 4:11 PM EST
Date June 18, 2026
Venue T-Mobile Park
Where To Watch MASN, Mariners.TV
Where To Stream MLB.TV
Season Series Season series tied 3-3.

Seattle brings the stronger record and home-field profile, but Baltimore has already shown life in this matchup, making the Woo-versus-Baz pitching gap and Mariners injury squeeze the market's cleanest pressure points.

Home Team
Record 38-37
Last 5 2-3 last five
ATS 29-45-0 ATS
Home 20-17 home
Analysis Updated: 8:10 AM ET
Injuries Checked: 8:05 AM ET
Odds Updated: 3:20 PM ET

Betting Snapshot

Spread
SEA -1.5
Open: SEA -1.5
Market Steady

Spread Movement

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Odds Updated: 6/18 3:20 PM ET
Moneyline
SEA -144
Open: SEA -156
Dog Taking Support

Moneyline Movement

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Odds Updated: 6/18 3:20 PM ET
Total
7.5
Open: 8
Total Dropping

Total Movement

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Odds Updated: 6/18 3:20 PM ET

Best Free Prop Pick

FREE PROP
Pete Alonso Over 0.5 Total Bases
Woo's strikeout base matches Baltimore's swing-and-miss risk on the road. Seattle's injuries could lower run support and extend tighter pitcher-prop value. Baltimore power threats make early-count command critical for Woo's prop path.

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Odds Comparison Center

Shop for the best lines in one place.

Best Home Spread
FanDuel | SEA -1.5
Best Home Moneyline
BetOnline.ag | SEA -136
Best Over Line
FanDuel | 7.5
Best Away Spread
FanDuel | BAL +1.5
Best Away Moneyline
BetOnline.ag | BAL +123
Best Under Line
BetOnline.ag | 8
Updated 3:20 PM ET
Sportsbook Spread Moneyline Total
FanDuelBAL +1.5
SEA -1.5
BAL +120
SEA -142
O 7.5
U 7.5
DraftKingsBAL +1.5
SEA -1.5
BAL +119
SEA -144
O 7.5
U 7.5
BetMGMBAL +1.5
SEA -1.5
BAL +118
SEA -145
O 7.5
U 7.5
BetRiversBAL +1.5
SEA -1.5
BAL +118
SEA -148
O 7.5
U 7.5
FanaticsBAL +1.5
SEA -1.5
BAL +120
SEA -145
O 7.5
U 7.5
BovadaBAL +1.5
SEA -1.5
BAL +121
SEA -144
O 7.5
U 7.5
BetOnline.agBAL +1.5
SEA -1.5
BAL +123
SEA -136
O 8
U 8
LowVig.agBAL +1.5
SEA -1.5
BAL +123
SEA -136
O 8
U 8
MyBookie.agBAL +1.5
SEA -1.5
BAL +120
SEA -142
O 7.5
U 7.5
BetUSBAL +1.5
SEA -1.5
BAL +123
SEA -136
O 7.5
U 7.5
CaesarsBAL +1.5
SEA -1.5
BAL +118
SEA -140
O 7.5
U 7.5

Injury Report

Seattle's lineup is the main injury concern, with Randy Arozarena on the injured list and Julio Rodriguez, Josh Naylor, and Luke Raley carrying day-to-day tags. Baltimore's notable bullpen update is Ryan Helsley back from the injured list, giving the Orioles another late-inning arm if Baz can keep the game within range.

Key Players

Baltimore
Gunnar Henderson
Homered in the previous Seattle matchup and drives Baltimore's best power lane.
Seattle
Bryan Woo
5-5 with a 4.28 ERA and 79 strikeouts entering this start.

Key Matchup Edge

Seattle's edge is run prevention at home. The Mariners bring the lower team ERA, cleaner WHIP, and a starter with stronger strikeout support, while Baltimore's path depends on early damage before Seattle can shorten the game through higher-leverage bullpen pockets.

3 Things to Watch

  • Woo's strikeout command window
  • Seattle's injured outfield bats
  • Baltimore's early-count damage path

Betting Breakdown

Baltimore comes into this matchup with a losing overall record but enough recent head-to-head familiarity to make the underdog case more than cosmetic. The Orioles have seen Seattle repeatedly this month, and that matters against a Mariners side still trying to stabilize an injury-hit lineup. The pitching matchup tilts toward Seattle because Bryan Woo has the better strikeout base and works in a park that can protect mistakes, but Shane Baz gives Baltimore a live arm if his fastball command holds. The key betting question is whether Seattle's price is asking too much from an offense missing or monitoring multiple important bats. If Julio Rodriguez, Josh Naylor, and Luke Raley are limited, the Mariners' margin for error shrinks, especially against a Baltimore lineup with Gunnar Henderson capable of changing the run environment quickly. The total around 8.5 fits a game where pitching has upside, but late offense remains possible if either bullpen inherits traffic.

Baltimore Betting Outlook

Baltimore's betting case starts with price and power. The Orioles do not bring a clean road profile, but they have already shown they can compete in this park and just beat Seattle behind stronger starting work and timely extra-base damage. Baz is volatile enough to create risk, yet his stuff gives Baltimore a path to keep Woo from turning this into a comfortable favorite script. The Orioles need Henderson, Adley Rutschman, and the middle order to force Seattle into stressful counts early. If they trail by multiple runs before the sixth, the matchup becomes much harder.

Seattle Betting Outlook

Seattle deserves favorite consideration because its pitching indicators are stronger and T-Mobile Park supports a run-prevention style. Woo's strikeout profile is the cleanest single matchup advantage, especially against a Baltimore lineup that can go quiet for long stretches when it chases. The concern is offensive health. Arozarena's absence and the day-to-day status of Rodriguez, Naylor, and Raley make it harder to justify a heavy favorite tax unless the lineup card confirms enough thump. Seattle's best path is simple: Woo works ahead, Cal Raleigh lengthens the order, and the bullpen protects a low-scoring lead.

Latest Team Buzz

Baltimore Orioles vs Seattle Mariners FAQ

What is the current spread for Baltimore Orioles vs Seattle Mariners?

The current home spread is SEA -1.5, while the away spread is BAL +1.5.

How far has the spread moved for Baltimore Orioles vs Seattle Mariners?

The spread opened at SEA -1.5 and is now SEA -1.5.

What is the current moneyline for Baltimore Orioles vs Seattle Mariners?

The current moneyline is BAL +119 / SEA -144.

How far has the moneyline moved for Baltimore Orioles vs Seattle Mariners?

The moneyline opened at BAL +129 / SEA -156 and is now BAL +119 / SEA -144.

What is the current total for Baltimore Orioles vs Seattle Mariners?

The current total is 7.5.

How far has the total moved for Baltimore Orioles vs Seattle Mariners?

The total opened at 8 and is now 7.5.

Is the market taking the underdog in Baltimore Orioles vs Seattle Mariners?

Current market signal: Market Steady.

Is the market taking the favorite in Baltimore Orioles vs Seattle Mariners?

Current market signal: Dog Taking Support.

Is the total dropping for Baltimore Orioles vs Seattle Mariners?

Current totals signal: Total Dropping.

Is the total rising for Baltimore Orioles vs Seattle Mariners?

Current totals signal: Total Dropping.

Where to watch Baltimore Orioles vs Seattle Mariners?

You can watch this game on MASN, Mariners.TV. For the latest broadcast details, see Where to Watch.

Where to stream Baltimore Orioles vs Seattle Mariners?

You can stream this game on MLB.TV.

What is the best free prop bet for Baltimore Orioles vs Seattle Mariners?

Pete Alonso Over 0.5 Total Bases

What is the biggest matchup edge for Baltimore Orioles vs Seattle Mariners?

Seattle's edge is run prevention at home. The Mariners bring the lower team ERA, cleaner WHIP, and a starter with stronger strikeout support, while Baltimore's path depends on early damage before Seattle can shorten the game through higher-leverage bullpen pockets.

AI Sports Betting Algorithm Remi

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Remi's Past Performance

VAULT RECORD (ATS)
530-425
VAULT NET UNITS (INCL. VIG)
+927.7
VAULT PROFIT (INCL. VIG, $100/U)
$92,766
EXEC RECORD (ATS)
2178-1857
EXEC NET UNITS (INCL. VIG)
+529.4
EXEC PROFIT (INCL. VIG, $100/U)
$52,938

MLB Past Picks

Remi—our in-house AI—prices every game and prop using multi-season priors, tempo/efficiency, injury/usage signals, and market movement.
We publish fair prices, recommended “buy-to” numbers, and confidence so you can bet prices, not teams.

This preview covers Baltimore Orioles vs. Seattle Mariners on June 18, 2026 at T-Mobile Park.
Odds shown reflect widely available numbers and may update closer to kickoff.

Want more? Check live edges, player props, and line moves on our MLB odds pages, and compare prices before you place a bet.

LEAN %WIN UNITS RESULT
LAA@ARI ARI -123 54.2% 4 WIN
KC@WAS WAS -125 54.7% 4 WIN
NYM@CIN CIN -135 55.5% 4 WIN
LAA@ARI LOGAN OHOPPE UNDER 0.5 SINGLES 53.4% 3 WIN
NYY@TOR NYY -112 56.3% 5 WIN
SEA@WAS SEA -125 56.1% 5 LOSS
HOU@KC KC -123 54.8% 4 LOSS
SD@BAL BAL -121 53.7% 3 LOSS
NYY@TOR NYY -108 57.6% 7 WIN
DET@CLE DET -133 57.3% 6 LOSS
SEA@WAS WAS -111 54.9% 4 WIN
TEX@BOS UNDER 8.5 54.6% 4 LOSS
SEA@WAS SEA -129 56.8% 5 WIN
STL@MIN MIN -131 55.6% 4 WIN
CHC@SF JUNG HOO LEE OVER 0.5 SINGLES 53.1% 3 LOSS
ATL@CHW ATL -103 53.6% 3 LOSS
SEA@BAL SEA -101 55.6% 5 LOSS
ARI@MIA MIA -113 55.7% 5 WIN
STL@NYM UNDER 8.5 56.6% 6 LOSS
PHI@TOR PHI -121 55.7% 5 WIN
ARI@MIA ARI -101 55.3% 4 LOSS
NYY@CLE UNDER 8.5 55.8% 5 LOSS
ATL@CHW ATL -130 56.3% 5 LOSS
HOU@LAA HOU -111 56.4% 6 LOSS
SEA@BAL SEA -110 56.4% 6 WIN
WAS@SF SF -105 54.1% 3 LOSS
CIN@SD UNDER 8 53.5% 3 PUSH
HOU@LAA HOU -115 56.0% 5 WIN
SEA@BAL SEA -111 53.7% 4 WIN
NYM@SD SD -104 55.0% 4 LOSS
CIN@STL STL -135 54.3% 3 WIN
KC@MIN MIN -102 56.0% 6 LOSS
SEA@DET DET -106 55.1% 4 WIN
BAL@TOR SHANE BAZ OVER 1.5 WALKS ALLOWED 53.2% 3 LOSS
PIT@ATL UNDER 8.5 56.9% 6 LOSS
SEA@DET SEA -107 56.4% 6 LOSS
NYM@SD SD -125 56.1% 5 LOSS
KC@MIN MIN -110 55.3% 5 WIN
WAS@ARI ARI -127 56.2% 5 LOSS
TOR@ATL UNDER 7.5 53.5% 3 LOSS
LAD@ARI LAD -122 56.1% 6 LOSS
BAL@BOS BOS -108 56.3% 6 LOSS
PIT@HOU HOU -108 54.8% 4 LOSS
TOR@ATL UNDER 8.5 57.0% 6 LOSS
TEX@STL STL -112 54.8% 4 WIN
MIA@WAS WAS -108 54.9% 4 LOSS
MIA@WAS WAS -112 55.3% 5 LOSS
KC@CIN CIN -118 55.3% 5 WIN
PIT@HOU HOU -110 56.4% 6 LOSS
TOR@ATL ATL -117 56.3% 6 WIN
MIA@WAS WAS -135 56.4% 5 LOSS