Mariners vs Marlins Prediction, Odds, Moneyline, Spread & Over/Under for July 8

Odds updated as of 2:12 a.m.

Wednesday's slate in the MLB includes a matchup between the Seattle Mariners and the Miami Marlins.

We've got you covered, in terms of the most important information regarding this game before you take a look at the MLB odds and spreads on FanDuel Sportsbook.

Mariners vs Marlins Game Info

• Seattle Mariners (47-45) vs. Miami Marlins (50-42)
• Date: Wednesday, July 8, 2026
• Time: 6:40 p.m. ET
• Venue: loanDepot park -- Miami, Florida
• Coverage: Marlins.TV and Mariners.TV

Mariners vs Marlins Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-138) | MIA: (+118)
• Spread: SEA: -1.5 (+122) | MIA: +1.5 (-146)
• Total: 8.5 -- Over: (-110) | Under: (-110)

Mariners vs Marlins Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 7-7, 3.81 ERA vs Tyler Phillips (Marlins) - 1-3, 3.52 ERA

The Mariners will look to George Kirby (7-7) against the Marlins and Tyler Phillips (1-3). Kirby's team is 6-11-0 against the spread this season in his starts. Kirby's team is 9-8 this season when he starts and they are the moneyline favorite. The Marlins have a 4-3-0 record against the spread in Phillips' starts. The Marlins are 1-3 in Phillips' four starts this season that they were the moneyline underdog.

Mariners vs Marlins Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (56.2%)

Mariners vs Marlins Moneyline

• The moneyline numbers for Mariners vs. Marlins reveal Seattle as the favorite (-138) and Miami as the underdog (+118) despite being the home team.

Mariners vs Marlins Spread

• The Marlins are +1.5 on the spread (-146 to cover), and Seattle is +122 to cover the runline.

Mariners vs Marlins Over/Under

• Mariners versus Marlins on July 8 has an over/under of 8.5 runs, with the odds on the over -110 and the under set at -110.

Bet on Seattle Mariners vs. Miami Marlins on FanDuel today!

Mariners vs Marlins Betting Trends

• The Mariners have been favorites in 79 games this season and have come away with the win 43 times (54.4%) in those contests.
• Seattle has a record of 25-14 in contests when sportsbooks favor them by -138 or more on the moneyline.
• Contests with the Mariners have gone over the total set by sportsbooks in 43 of 91 chances this season.
• The Mariners have posted a record of 34-57-0 against the spread this season.
• The Marlins have compiled an 18-29 record in games they were the underdog on the moneyline (winning 38.3% of those games).
• Miami is 9-14 (winning only 39.1% of its games) when it has played as a moneyline underdog of +118 or longer.
• In the 91 games bookmakers have set an over/under for the Marlins, they have combined with opponents to go over the total 49 times (49-40-2).
• The Marlins have collected a 49-42-0 record against the spread this season.

Mariners Player Leaders

• Randy Arozarena leads Seattle in OBP (.381), slugging percentage (.453) and total hits (89) this season. He has a .290 batting average.
• Among qualified hitters, he ranks 22nd in batting average, his on-base percentage ranks 16th, and he is 57th in slugging.
• Arozarena hopes to build on a three-game hitting streak in this matchup. In his last five games he is hitting .412 with a double, a home run, three walks and four RBIs.
• Josh Naylor is hitting .250 with 11 doubles, eight home runs and 27 walks. He's slugging .354 with an on-base percentage of .311.
• Among qualified hitters, his batting average places him 85th, his on-base percentage 114th, and his slugging percentage 128th.
• Naylor enters this game looking to extend his three-game hit streak. In his last five games he is batting .143 with two RBIs.
• Cole Young has collected 85 base hits, an OBP of .319 and a slugging percentage of .394 this season.
• Dominic Canzone has 14 home runs, 37 RBI and a batting average of .267 this season.

Marlins Player Leaders

• Otto Lopez has put up a team-best slugging percentage (.515) and paces the Marlins in hits (124). He's batting .343 and with an on-base percentage of .374.
• He ranks first in batting average, 23rd in on-base percentage and 15th in slugging percentage among all qualified hitters in the majors.
• Lopez enters this matchup on a seven-game hitting streak. In his last 10 outings he is batting .370 with four doubles, two triples, three home runs, a walk and eight RBIs.
• Xavier Edwards' .385 on-base percentage leads his team. He has a batting average of .300 while slugging .423.
• He is 10th in batting average, 12th in on-base percentage and 76th in slugging percentage in MLB.
• Liam Hicks has eight doubles, a triple, 13 home runs and 31 walks while hitting .295.
• Jakob Marsee has 11 doubles, three triples, five home runs and 47 walks while batting .196.

Mariners vs Marlins Head to Head

• 7/7/2026: 6-5 MIA (Favorite: Marlins, Spread: -1.5, Total: 8, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 4/27/2025: 7-6 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 4/26/2025: 14-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -220, Underdog Moneyline: +184)
• 4/25/2025: 8-4 MIA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -320, Underdog Moneyline: +260)
• 6/23/2024: 6-4 MIA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 6/22/2024: 9-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -168, Underdog Moneyline: +142)
• 6/21/2024: 3-2 MIA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -176, Underdog Moneyline: +148)
• 6/14/2023: 4-1 MIA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -188, Underdog Moneyline: +158)
• 6/13/2023: 9-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 6/12/2023: 8-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -120, Underdog Moneyline: +102)

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