Seattle Mariners vs Houston Astros odds and betting data

This is the MLB event page for Seattle Mariners vs Houston Astros. You can see and compare odds across different sportsbooks. The matchup is scheduled for Sunday, August 16 at 11:20 PM UTC, and the odds tables below organize every available price by sportsbook, market, team, and outcome so you can quickly scan the best number before placing a bet.

Linewhale highlights the strongest current prices across 9 sportsbooks, including moneyline prices when available, spread points and prices, and over/under totals. Use this page to compare sportsbook odds, identify the best price for each side, review market differences, and open free line movement history for individual odds.

Free line movement for Seattle Mariners vs Houston Astros

To see line movement for this event, use the odds table below and click a specific moneyline, spread, or total price. Linewhale will open a free line movement chart for the selected sportsbook and outcome for Seattle Mariners vs Houston Astros, can review how that number has changed before you bet.

MLBSunday, Aug 16, 11:20 PM UTC

SMA

Seattle

Mariners

Win Probability

100%0%

Houston

Astros

HAS

Win Probability

100%0%

Moneyline · Best Across Books

BET Mariners -1429

NOV Astros +99900

Spread · Best Across Books

NOV Mariners-1.5 -208

Astros—

Total · Best Across Books

KAL Over+8.5 +9900

BET Under+6.5 -1111

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Moneyline· Pick the winner

Side	CCaesars Sportsbook	DDraftKings	FFanDuel	NNovig	PProphetX	BBetMGM	BBetRivers	BBovada
Seattle Mariners				—
Houston Astros

Spread· Seattle Mariners -1.5 / Houston Astros +1.5

Side	NNovig
Seattle Mariners	-1.5
Houston Astros	—

Spread· Seattle Mariners +1.5 / Houston Astros -1.5

Side	BBetMGM
Seattle Mariners	+1.5
Houston Astros	-1.5

Spread· Seattle Mariners +2.5 / Houston Astros -2.5

Side	PPolymarket
Seattle Mariners	—
Houston Astros	-2.5

Total· Over / Under

Side	CCaesars Sportsbook	DDraftKings	FFanDuel	KKalshi	BBetMGM	BBovada
Over 6.5
Under 6.5				—

Seattle Mariners vs Houston Astros betting odds overview

Compare MLB odds for Seattle Mariners vs Houston Astros, scheduled for Sunday, August 16 at 11:20 PM UTC. Linewhale tracks moneyline, spread, and total prices across major US sportsbooks so you can compare the best available number before placing a bet.

Best moneyline odds

Seattle Mariners is listed at -1429 on BetMGM, while Houston Astros is listed at +99900 on Novig.

Best spread odds

Spread odds are not available for this matchup yet.

Best total odds

The best over price is +9900 on Kalshi; the best under price is -1111 on BetMGM. The listed total is 6.5.

Odds can move quickly as sportsbooks adjust to injuries, lineup news, betting volume, and market-making books. Always confirm the final price at the sportsbook before submitting a wager.