Mariners vs Marlins Prediction, Odds, Moneyline, Spread & Over/Under for July 9

Odds updated as of 6:13 p.m.

The Thursday schedule in MLB includes a matchup between the Seattle Mariners and the Miami Marlins.

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

Mariners vs Marlins Game Info

• Seattle Mariners (47-46) vs. Miami Marlins (51-42)
• Date: Thursday, July 9, 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: (-130) | MIA: (+110)
• Spread: SEA: -1.5 (+128) | MIA: +1.5 (-154)
• Total: 8 -- Over: (-115) | Under: (-105)

Mariners vs Marlins Probable Starting Pitchers

Probable Pitchers: Bryce Miller (Mariners) - 4-2, 1.71 ERA vs Janson Junk (Marlins) - 3-5, 4.80 ERA

This contest's pitching matchup is set, as the Mariners will send Bryce Miller (4-2) to the mound, while Janson Junk (3-5) will take the ball for the Marlins. Miller and his team have a record of 1-6-0 against the spread when he starts. Miller's team has a record of 3-4 this season when he starts and they are the favorite on the moneyline. The Marlins are 5-6-0 ATS in Junk's 11 starts with a set spread. The Marlins have been the moneyline underdog in five of Junk's starts this season, and they went 2-3 in those games.

Mariners vs Marlins Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Marlins win (51.8%)

Mariners vs Marlins Moneyline

• Miami is a +110 underdog on the moneyline, while Seattle is a -130 favorite on the road.

Mariners vs Marlins Spread

• The Mariners are at the Marlins and are favored by 1.5 runs (+128 to cover) on the runline. Miami is -154 to cover.

Mariners vs Marlins Over/Under

• Mariners versus Marlins on July 9 has an over/under of 8 runs, with the odds on the over -115 and the under set at -105.

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

Mariners vs Marlins Betting Trends

• The Mariners have been victorious in 43, or 53.8%, of the 80 contests they have been chosen as favorites in this season.
• Seattle has a record of 35-24 in contests when bookmakers favor them by -130 or more on the moneyline.
• The Mariners and their opponents have gone over the total this season in 43 of their 92 opportunities.
• The Mariners are 34-58-0 against the spread in their 92 games with a line set by sportsbooks this season.
• The Marlins have won 39.6% of the games this season they were the underdog on the moneyline (19-29).
• Miami is 12-18 (winning 40% of its games) when it has played as a moneyline underdog of +110 or longer.
• The Marlins have had an over/under set by oddsmakers 92 times, and have combined with opponents to go over the total in 49 of those games (49-41-2).
• The Marlins have covered 54.3% of their games this season, going 50-42-0 ATS.

Mariners Player Leaders

• Randy Arozarena has 89 hits and an OBP of .377 to go with a slugging percentage of .447. All three of those stats rank first among Seattle hitters this season. He has a .286 batting average, as well.
• Among qualifying batters, he is 28th in batting average, his on-base percentage ranks 20th, and he is 61st in slugging.
• Josh Naylor is batting .251 with 11 doubles, eight home runs and 28 walks, while slugging .354 with an on-base percentage of .313.
• His batting average ranks 85th among qualified players, his on-base percentage 111th, and his slugging percentage 129th.
• Naylor heads into this matchup looking to extend his four-game hit streak. In his last five games he is hitting .200 with a walk and two RBIs.
• Cole Young has collected 85 base hits, an OBP of .315 and a slugging percentage of .389 this season.
• Dominic Canzone has 14 home runs, 37 RBI and a batting average of .266 this season.

Marlins Player Leaders

• Otto Lopez has 126 hits with a .518 slugging percentage, both team-high figures for the Marlins. He's batting .345 and with an on-base percentage of .375.
• Including all qualified hitters in MLB, his batting average puts him first, his on-base percentage is 22nd, and he is 15th in slugging.
• Lopez hopes to build on an eight-game hitting streak in this matchup. In his last 10 games he is hitting .413 with five doubles, two triples, three home runs, a walk and eight RBIs.
• Xavier Edwards has a .386 OBP to lead his team. He has a batting average of .303 while slugging .430.
• Including all qualified players, he ranks 10th in batting average, 12th in on-base percentage and 71st in slugging percentage.
• Liam Hicks is batting .288 with eight doubles, a triple, 13 home runs and 31 walks.
• Javier Sanoja is batting .278 with 17 doubles, two triples, three home runs and 14 walks.

Mariners vs Marlins Head to Head

• 7/8/2026: 2-0 MIA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 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)

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