The Guardians will play the Mariners on Sunday, June 15th, 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 Cleveland Guardians possess a 90.00 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 Cleveland Guardians - The Cleveland Guardians head into this matchup with a 15-15 record as a visiting team. This standing ranks them 3rd 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 - Cleveland Guardians batters have produced 216 runs, ranking them 19th Overall, with the Seattle Mariners ranking 11th (238) for runs scored.
- Runs Allowed - Cleveland Guardians pitchers and fielders have allowed 236 runs, ranking them 11th Overall for runs allowed. Meanwhile, the Seattle Mariners now rank 16th Overall, allowing 219 runs.
- Team Streaks - The Cleveland Guardians 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 Cleveland Guardians have a 29-25 Overall record (6.0 GB American Central 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.
Avast ye landlubbers! The Cleveland Guardians be takin' on the Seattle Mariners...
The Guardians be sailin' into enemy waters with a record of 29-25...
Their win percentage be a measly 0.537, with a pitiful 4-6 in their last 10 games...
The Mariners be sittin' pretty with a 29-23 record and a 0.558 win percentage...
But don't ye worry, the Guardians be ready to plunder and pillage...
So hoist the Jolly Roger and set sail for victory, me hearties! (Arrr!)...
Check out this game's prop bets below, bet on MLB baseball at legal US sportsbooks...
Review each team's standing at the bottom of the page. Aye aye!
Best Guardians at Mariners Odds
| Underdog Cleveland Guardians | Favorite Seattle Mariners |
|---|---|
| Over | Under |
|---|---|
| Underdog Seattle Mariners | Favorite Cleveland Guardians |
|---|---|
Matchup Odds FAQs
The Seattle Mariners are the -120 moneyline favorite at BetMGM and the Cleveland Guardians are the +100 moneyline underdog at BetMGM.
The best over line is 8 -102 runs at BetMGM, which means you risk $102 to win $100 betting the over. The best under line is 8 -118 runs at BetMGM, and that means you risk $118 to win $100 betting the under.
The Cleveland Guardians are -1.5 +170 run line favorites at BetMGM, while the Seattle Mariners are +1.5 -210 run line underdogs at BetMGM.
MLB Odds Example
|
Game |
 BetMGMBet |
|---|---|
Guardians
Mariners
6/15/25 4:10pm EDT | +100-120 |
- Cleveland Guardians bettors risk $100 to win $100 at +100 odds. The implied probability for Cleveland Guardians is 50%.
- Seattle Mariners bettors risk $100 to win $83.33 at -120 odds. The implied probability for Seattle Mariners is 54.55%.
Cleveland Guardians at Seattle Mariners Prop Bets
| BetMGM Bet |
|
|---|---|
Guardians
Mariners
First Team to Score
6/15/25 4:10pm EDT | -155+120Bet |
Guardians
Mariners
Tie
1st Inning Winner
6/15/25 4:10pm EDT | +290+310-140Bet |
Guardians
Mariners
Tie
First 3 Innings Winner
6/15/25 4:10pm EDT | +140+145+270Bet |
Guardians
Mariners
To Extra Innings
6/15/25 4:10pm EDT | Yes +725No -1200Bet |
| BetMGM |
Cleveland Guardians & 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.
Cleveland Guardians World Series Odds|
Team | BetMGM |
|---|---|
| Guardians | +10000 Bet |
|
Team | BetMGM |
|---|---|
| Mariners | +3000 Bet |
Cleveland Guardians & 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 |
| Cleveland Guardians | 29 | 25 | 0.537 | +6.0 | 14-10 | 15-15 | 216 | 236 | -20 | L3 | 4-6 |
How to Bet on the Game
Time needed: 4 minutes.
How to Bet on the Cleveland Guardians 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, June 15th, 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 Cleveland Guardians vs Seattle Mariners Game.
Navigate to the sportsbook's MLB page. Next, look for live or upcoming matchups. Select the Cleveland Guardians 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 15, 2025 MLB Games
- Cincinnati Reds vs Detroit Tigers - 6/15/25 12:05pm EDT
- Colorado Rockies vs Atlanta Braves - 6/15/25 1:35pm EDT
- Los Angeles Angels vs Baltimore Orioles - 6/15/25 1:35pm EDT
- New York Yankees vs Boston Red Sox - 6/15/25 1:35pm EDT
- Toronto Blue Jays vs Philadelphia Phillies - 6/15/25 1:35pm EDT
- Miami Marlins vs Washington Nationals - 6/15/25 1:35pm EDT
- Tampa Bay Rays vs New York Mets - 6/15/25 1:40pm EDT
- St. Louis Cardinals vs Milwaukee Brewers - 6/15/25 2:10pm EDT
- Oakland Athletics vs Kansas City Royals - 6/15/25 2:10pm EDT
- Minnesota Twins vs Houston Astros - 6/15/25 2:10pm EDT
- Pittsburgh Pirates vs Chicago Cubs - 6/15/25 2:20pm EDT
- Chicago White Sox vs Texas Rangers - 6/15/25 2:35pm EDT
- San Diego Padres vs Arizona Diamondbacks - 6/15/25 4:10pm EDT
- San Francisco Giants vs Los Angeles Dodgers - 6/15/25 7:10pm EDT