The Reds will play the Mariners on Sunday, March 15th, 2026. 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
- Best Odds
- Interactive Odds Example
- Prop Bets
- Team Futures Odds
- Team Pages
- Team Standings
- Other Games Today
Best Reds at Mariners Odds
| Underdog Cincinnati Reds | Favorite Seattle Mariners |
|---|---|
| Over | Under |
|---|---|
| Underdog Cincinnati Reds | Favorite Seattle Mariners |
|---|---|
Matchup Odds FAQs
The Seattle Mariners are the -120 moneyline favorite at BetMGM and the Cincinnati Reds are the +100 moneyline underdog at BetMGM.
The best over line is 11.5 -110 runs at BetMGM, which means you risk $110 to win $100 betting the over. The best under line is 11.5 -110 runs at BetMGM, and that means you risk $110 to win $100 betting the under.
The Seattle Mariners are -1.5 +165 run line favorites at BetMGM, while the Cincinnati Reds are +1.5 -200 run line underdogs at BetMGM.
MLB Odds Example
|
Game |
 BetMGMBet |
|---|---|
Reds
Mariners
3/15/26 4:10pm EDT | +100-120 |
- Cincinnati Reds bettors risk $100 to win $100 at +100 odds. The implied probability for Cincinnati Reds is 50%.
- Seattle Mariners bettors risk $100 to win $83.33 at -120 odds. The implied probability for Seattle Mariners is 54.55%.
Cincinnati Reds at Seattle Mariners Prop Bets
| BetMGM Bet |
|
|---|---|
Reds
Mariners
3/15/26 4:10pm EDT | Pending BetMGM |
Cincinnati Reds & 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.
Cincinnati Reds World Series Odds|
Team | BetMGM |
|---|---|
| Reds | +5000 Bet |
|
Team | BetMGM |
|---|---|
| Mariners | +1300 Bet |
Cincinnati Reds & 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cincinnati Reds | 0 | 1 | 0.000 | +1.5 | 0-1 | 0-0 | 0 | 3 | -3 | L1 | 0-1 |
| Seattle Mariners | 0 | 1 | 0.000 | +1.5 | 0-1 | 0-0 | 4 | 6 | -2 | L1 | 0-1 |
How to Bet on the Game
Time needed: 4 minutes.
How to Bet on the Cincinnati Reds 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, March 15th, 2026 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 Cincinnati Reds vs Seattle Mariners Game.
Navigate to the sportsbook's MLB page. Next, look for live or upcoming matchups. Select the Cincinnati Reds 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 March 15, 2026 MLB Games
- Minnesota Twins vs Boston Red Sox - 3/15/26 1:05pm EDT
- Miami Marlins vs Houston Astros - 3/15/26 1:05pm EDT
- Atlanta Braves vs Philadelphia Phillies - 3/15/26 1:05pm EDT
- Washington Nationals vs St. Louis Cardinals - 3/15/26 1:05pm EDT
- Pittsburgh Pirates vs Tampa Bay Rays - 3/15/26 1:05pm EDT
- Toronto Blue Jays vs New York Mets - 3/15/26 1:10pm EDT
- Milwaukee Brewers vs San Francisco Giants - 3/15/26 4:05pm EDT
- Chicago White Sox vs Kansas City Royals - 3/15/26 4:05pm EDT
- Oakland Athletics vs Cleveland Guardians - 3/15/26 4:05pm EDT
- San Diego Padres vs Arizona Diamondbacks - 3/15/26 4:10pm EDT
- Colorado Rockies vs Los Angeles Angels - 3/15/26 4:10pm EDT