The Astros will play the Mariners on Sunday, July 20th, 2025. Your timezone's first pitch time is 4:10 pm EDT. Check local listings or your nearest streaming app for coverage.
Learn more about MLB Betting with our handy tutorial and guide. We explain money line, total and run line bets. Plus, a great discussion about exotic bets like MLB Baseball parlays and props.
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Table of Contents
- Matchup Stats
- Captain Shady Lines
- Best Odds
- Interactive Odds Example
- Prop Bets
- Team Futures Odds
- Team Pages
- Team Standings
- Other Games Today
Key Matchup Stats
- SportsBetting3.com Power Rankings - As the 2025 season continues, the Houston Astros possess a 93.67 SportsBetting3.com power ranking. The Seattle Mariners now have a 93.00 power ranking. Teams with a higher SportsBetting3.com power ranking will typically be moneyline favorites.
- Visiting Houston Astros - The Houston Astros head into this matchup with a 23-22 record as a visiting team. This standing ranks them 5th Overall for visiting team wins.
- Home Seattle Mariners - The Seattle Mariners will throw the first pitch possessing a 26-21 home team record. That puts them 9th for home team wins in the Overall MLB standings.
- Runs Scored - Houston Astros batters have produced 419 runs, ranking them 17th Overall, with the Seattle Mariners ranking 9th (457) for runs scored.
- Runs Allowed - Houston Astros pitchers and fielders have allowed 368 runs, ranking them 22nd Overall for runs allowed. Meanwhile, the Seattle Mariners now rank 11th Overall, allowing 420 runs.
- Team Streaks - The Houston Astros have lost their last 2 games. Their opponent, the Seattle Mariners have won their last 4 games.
- Team Records - Let's review each team's records. The Houston Astros have a 56-41 Overall record (0.0 GB American West Division), with the Seattle Mariners notching a 52-45 Overall standing (4.0 GB American West Division).
Captain Shady Lines
A broken compass is right at least twice a day.
Arrr, the scurvy Astros be facing the Mariners in Seattle on Sunday...Those landlubbers better be ready for a battle on the diamond...The Astros may have a better record, but the Mariners be surging...They be winning 7 of their last 10 games, while the Astros be floundering...
The Astros need to shape up and start winning if they want to stay ahead...A loss to the Mariners could be disastrous for their playoff hopes...The Mariners be hungry for victory and won't be an easy opponent...But the Astros be a tough crew and won't go down without a fight...
So gather 'round, ye scallywags, and watch the Astros take on the Mariners...It be a game filled with twists and turns, and no one knows who will emerge victorious...Check out this game's prop bets below, place yer wagers, and see who comes out on top...Bet on MLB baseball at legal US sportsbooks and witness the showdown for yerself...Review each team's standing at the bottom of the page and see where they stand in the league...May the best team win, and may the baseball gods favor the bravest crew on the field!
Best Astros at Mariners Odds
| Underdog Houston Astros | Favorite Seattle Mariners |
|---|---|
| Over | Under |
|---|---|
| Underdog Houston Astros | Favorite Seattle Mariners |
|---|---|
Matchup Odds FAQs
The Seattle Mariners are the -140 moneyline favorite at BetMGM and the Houston Astros are the +115 moneyline underdog at BetMGM.
The best over line is 6.5 -115 runs at BetMGM, which means you risk $115 to win $100 betting the over. The best under line is 6.5 -105 runs at BetMGM, and that means you risk $105 to win $100 betting the under.
The Seattle Mariners are -1.5 +170 run line favorites at BetMGM, while the Houston Astros are +1.5 -210 run line underdogs at BetMGM.
MLB Odds Example
|
Game |
 BetMGMBet |
|---|---|
Astros
Mariners
7/20/25 4:10pm EDT | +115-140 |
- Houston Astros bettors risk $100 to win $115 at +115 odds. The implied probability for Houston Astros is 46.51%.
- Seattle Mariners bettors risk $100 to win $71.43 at -140 odds. The implied probability for Seattle Mariners is 58.33%.
Houston Astros at Seattle Mariners Prop Bets
| BetMGM Bet |
|
|---|---|
Astros
Mariners
First Team to Score
7/20/25 4:10pm EDT | -130+100Bet |
Astros
Mariners
Tie
1st Inning Winner
7/20/25 4:10pm EDT | +375+340-185Bet |
Astros
Mariners
Tie
First 3 Innings Winner
7/20/25 4:10pm EDT | +180+145+200Bet |
Astros
Mariners
To Extra Innings
7/20/25 4:10pm EDT | Yes +650No -1100Bet |
| BetMGM | |
Astros
Mariners
1st Team to Score Will Win
7/20/25 4:10pm EDT | Yes -250No +190Bet |
Astros
Total Runs
HOU at SEA 7/20/25 4:10pm EDT | 2.5 o -1552.5 u +118Bet |
Mariners
Total Runs
HOU at SEA 7/20/25 4:10pm EDT | 3.5 o +1053.5 u -140Bet |
Bryan Woo
Strikeouts Thrown
HOU at SEA 7/20/25 4:10pm EDT | 5.5 o -1755.5 u +130Bet |
| BetMGM | |
Hunter Brown
Strikeouts Thrown
HOU at SEA 7/20/25 4:10pm EDT | 7.5 o +1057.5 u -140Bet |
Houston Astros & Seattle Mariners Futures Odds
Latest World Series odds, if available, for each team. Review odds for other teams and learn how to bet on the tournament. See past Championship results and learn how to bet World Series teasers, props and parlays.
Houston Astros World Series Odds|
Team | BetMGM |
|---|---|
| Astros | +1600 Bet |
|
Team | BetMGM |
|---|---|
| Mariners | +1200 Bet |
Houston Astros & Seattle Mariners Team Pages
Review each team's season win total odds, futures odds, betting bonuses and other valuable information on our exclusive team betting odds pages. Team betting odds and stats update throughout the season:
Team Standings
| Team | W | L | Pct | GB | Home | Away | RS | RA | Diff | Strk | L10 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Houston Astros | 74 | 60 | 0.552 | +8.5 | 40-28 | 34-32 | 569 | 550 | +19 | W2 | 5-5 |
| Seattle Mariners | 72 | 62 | 0.537 | +10.5 | 41-27 | 31-35 | 616 | 591 | +25 | W1 | 4-6 |
How to Bet on the Game
Time needed: 4 minutes.
How to Bet on the Houston Astros vs Seattle Mariners MLB Game
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Open a new sports betting account before game time.
Review our list of sports betting sites. Open a new account before the game starts on Sunday, July 20th, 2025 at 4:10 pm EDT, making sure to enter all your personal details correctly. Don't forget to add your bonus code.
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Visit the sportsbook’s cashier, banking, or deposit page.
Navigate to the sportsbook's deposit page. Use your Visa card or MasterCard, or deposit with a bank transfer, or other methods like Paypal.
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Tap to the sportsbook's MLB page, look for the Houston Astros vs Seattle Mariners Game.
Navigate to the sportsbook's MLB page. Next, look for live or upcoming matchups. Select the Houston Astros vs Seattle Mariners Game.
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Choose your bet and place a wager.
Choose your bet and then use the funds you deposited to place a wager. The sportsbook will pay your winnings or deduct a losing wager from your account balance after the game.
Other July 20, 2025 MLB Games
- San Francisco Giants vs Toronto Blue Jays
- Baltimore Orioles vs Tampa Bay Rays
- Chicago White Sox vs Pittsburgh Pirates
- Los Angeles Angels vs Philadelphia Phillies
- New York Yankees vs Atlanta Braves
- San Diego Padres vs Washington Nationals
- Cincinnati Reds vs New York Mets
- Oakland Athletics vs Cleveland Guardians
- Kansas City Royals vs Miami Marlins
- Boston Red Sox vs Chicago Cubs
- Minnesota Twins vs Colorado Rockies
- Milwaukee Brewers vs Los Angeles Dodgers
- St. Louis Cardinals vs Arizona Diamondbacks
- Detroit Tigers vs Texas Rangers