The Red Sox will play the Mariners on Wednesday, June 18th, 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 Boston Red Sox possess a 91.00 SportsBetting3.com power ranking. The Seattle Mariners now have a 93.67 power ranking. Teams with a higher SportsBetting3.com power ranking will typically be moneyline favorites.
- Visiting Boston Red Sox - The Boston Red Sox head into this matchup with a 11-15 record as a visiting team. This standing ranks them 7th Overall for visiting team wins.
- Home Seattle Mariners - The Seattle Mariners will throw the first pitch possessing a 13-11 home team record. That puts them 7th for home team wins in the Overall MLB standings.
- Runs Scored - Boston Red Sox batters have produced 269 runs, ranking them 6th Overall, with the Seattle Mariners ranking 11th (238) for runs scored.
- Runs Allowed - Boston Red Sox pitchers and fielders have allowed 252 runs, ranking them 8th Overall for runs allowed. Meanwhile, the Seattle Mariners now rank 16th Overall, allowing 219 runs.
- Team Streaks - The Boston Red Sox have lost their last 3 games. Their opponent, the Seattle Mariners have lost their last 2 games.
- Team Records - Let's review each team's records. The Boston Red Sox have a 27-29 Overall record (8.5 GB American East Division), with the Seattle Mariners notching a 29-23 Overall standing (0.0 GB American West Division).
Captain Shady Lines
A broken compass is right at least twice a day.
Arrr, those scallywags with a losing record be facing the Mariners...
By the black spot! Seattle be havin' a better win percentage...
The Red Sox be needin' to plunder some wins on this voyage...
It be a battle on the high seas, bet on MLB baseball...
Check out this game's prop bets below and may the best crew win...
(Arrr!)
The standings be showin' the Mariners ahead in the race...
(Arrr!)
Bet on MLB baseball at legal US sportsbooks before the tide turns...
(Arrr!)
Review each team's standing at the bottom of the page, ye landlubbers...
(Arrr!)
Best Red Sox at Mariners Odds
| Underdog Seattle Mariners | Favorite Boston Red Sox |
|---|---|
| Over | Under |
|---|---|
| Underdog Seattle Mariners | Favorite Boston Red Sox |
|---|---|
Matchup Odds FAQs
The Boston Red Sox are the -120 moneyline favorite at BetMGM and the Seattle Mariners are the +100 moneyline underdog at BetMGM.
The best over line is 6.5 -120 runs at BetMGM, which means you risk $120 to win $100 betting the over. The best under line is 6.5 +100 runs at BetMGM, and that means you risk $100 to win $100 betting the under.
The Boston Red Sox are -1.5 +154 run line favorites at BetMGM, while the Seattle Mariners are +1.5 -190 run line underdogs at BetMGM.
MLB Odds Example
|
Game |
 BetMGMBet |
|---|---|
Red Sox
Mariners
6/18/25 4:10pm EDT | -120+100 |
- Seattle Mariners bettors risk $100 to win $100 at +100 odds. The implied probability for Seattle Mariners is 50%.
- Boston Red Sox bettors risk $100 to win $83.33 at -120 odds. The implied probability for Boston Red Sox is 54.55%.
Boston Red Sox at Seattle Mariners Prop Bets
| BetMGM Bet |
|
|---|---|
Red Sox
Mariners
First Team to Score
6/18/25 4:10pm EDT | -160+125Bet |
Red Sox
Mariners
Tie
1st Inning Winner
6/18/25 4:10pm EDT | +310+400-175Bet |
Red Sox
Mariners
Tie
First 3 Innings Winner
6/18/25 4:10pm EDT | +135+180+220Bet |
Red Sox
Mariners
To Extra Innings
6/18/25 4:10pm EDT | Yes +650No -1000Bet |
| BetMGM | |
Red Sox
Mariners
1st Team to Score Will Win
6/18/25 4:10pm EDT | Yes -250No +190Bet |
Red Sox
Total Runs
BOS at SEA 6/18/25 4:10pm EDT | 3.5 o +1003.5 u -130Bet |
Mariners
Total Runs
BOS at SEA 6/18/25 4:10pm EDT | 2.5 o -1552.5 u +120Bet |
Garrett Crochet
Strikeouts Thrown
BOS at SEA 6/18/25 4:10pm EDT | 8.5 o +1058.5 u -140Bet |
| BetMGM | |
Luis Castillo
Strikeouts Thrown
BOS at SEA 6/18/25 4:10pm EDT | 6.5 o +1056.5 u -135Bet |
Boston Red Sox & 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.
Boston Red Sox World Series Odds|
Team | BetMGM |
|---|---|
| Red Sox | +6600 Bet |
|
Team | BetMGM |
|---|---|
| Mariners | +3000 Bet |
Boston Red Sox & 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Seattle Mariners | 29 | 23 | 0.558 | +5.0 | 13-11 | 16-12 | 238 | 219 | +19 | L2 | 6-4 |
| Boston Red Sox | 27 | 29 | 0.482 | +9.0 | 16-14 | 11-15 | 269 | 252 | +17 | L3 | 5-5 |
How to Bet on the Game
Time needed: 4 minutes.
How to Bet on the Boston Red Sox 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 Wednesday, June 18th, 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 Boston Red Sox vs Seattle Mariners Game.
Navigate to the sportsbook's MLB page. Next, look for live or upcoming matchups. Select the Boston Red Sox 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 June 18, 2025 MLB Games
- Pittsburgh Pirates vs Detroit Tigers - 6/18/25 6:40pm EDT
- Philadelphia Phillies vs Miami Marlins - 6/18/25 6:40pm EDT
- Los Angeles Angels vs New York Yankees - 6/18/25 7:05pm EDT
- Arizona Diamondbacks vs Toronto Blue Jays - 6/18/25 7:07pm EDT
- New York Mets vs Atlanta Braves - 6/18/25 7:15pm EDT
- Baltimore Orioles vs Tampa Bay Rays - 6/18/25 7:35pm EDT
- St. Louis Cardinals vs Chicago White Sox - 6/18/25 7:40pm EDT
- Milwaukee Brewers vs Chicago Cubs - 6/18/25 8:05pm EDT
- Kansas City Royals vs Texas Rangers - 6/18/25 8:05pm EDT
- Colorado Rockies vs Washington Nationals - 6/18/25 8:30pm EDT
- Minnesota Twins vs Cincinnati Reds - 6/18/25 8:40pm EDT
- Cleveland Guardians vs San Francisco Giants - 6/18/25 9:45pm EDT
- Houston Astros vs Oakland Athletics - 6/18/25 10:05pm EDT
- San Diego Padres vs Los Angeles Dodgers - 6/18/25 10:10pm EDT