MLB Prop Bets: Miami Marlins vs Seattle Mariners (July 9, 2026)
The Seattle Mariners (47-46) face the Miami Marlins (51-42) at LoanDepot Park on Thursday at 6:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Bryce Miller is the probable pitcher for the Mariners, while Janson Junk is the probable pitcher for the Marlins. The Mariners are favored to win at -149, while the Marlins are at +123. The total runs line is set at 8.0, with OVER at -112 and UNDER at -108.
- The Mariners (+114) have a 40-53 Run Line record this season, while the Marlins (-137) hold a record of 49-44.
- The Mariners have a 44-45-4 O/U record this season (meaning 44 games have gone over the total runs line, 45 have gone under and four have resulted in a push). The Marlins have a 50-41-2 O/U record.
Scoring Insights
- The Mariners are averaging 4.1 runs per game this season (27th in the league). Comparatively, the Marlins are averaging +0.5 more at 4.6 runs (11th).
- In the field, the Mariners are allowing only 3.8 runs per game this season (3rd in the league), while the Marlins are allowing an average of 4.3 runs (11th).
Let's take a look at how these teams perform in some other key statistical areas.
Batting Insights:
Batting Average
- Looking at their batting averages this season, the Mariners are at .230 (ranking 27th in the Major leagues), while the Marlins are batting .254 (7th).
Home Runs
- In terms of total home runs this season, the Marlins have hit 94 (23rd in the Major Leagues). Meanwhile, the Mariners have managed 110 (13th).
Runs Batted In
- Finally, looking at their runs batted in, the Mariners have recorded 364 RBIs to rank T24th in the MLB this season. Comparatively, the Marlins have recorded 410 RBIs to rank 13th.
Pitching Insights:
Earned Run Average
- The Marlins have an earned run average of 4.04 this season (10th in the Majors), while The Mariners have an ERA of 3.54 (4th).
Strikeouts
- Turning our attention to total strikeouts, the Mariners have recorded 802 this season, ranking 10th in the MLB. Meanwhile, the Marlins rank 13th for total strikeouts, recording 780.
Opponent Batting Average
- Opponents are batting an average of .229 against the Marlins this season (4th in the Major Leagues). Comparatively, the Mariners' opponents are at .237 (9th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 22-20-51 | 13-11-23 | 9-9-28 | 21-17-42 | 1-3-9 | 0-0-0 | 0-1-9 |
| Marlins | 21-20-52 | 10-8-29 | 11-12-23 | 10-6-32 | 11-14-20 | 0-0-0 | 3-1-6 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 39-31-23 | 22-14-11 | 17-17-12 | 32-27-21 | 7-4-2 | 0-0-0 | 3-4-3 |
| Marlins | 37-34-22 | 20-13-14 | 17-21-8 | 21-12-15 | 16-22-7 | 0-0-0 | 6-3-1 |
NRFI/YRFI
The NRFI market is paying -130 and the YRFI is paying +100.
- The NRFI is 46-47 in Mariners games this season. The Marlins also have a 46-47 NRFI record.
Last Time They Met
The Marlins recorded a 2-0 victory over the Mariners at LoanDepot Park yesterday. Kyle Stowers went yard en route to that victory, hitting a home run to go with an RBI. The Marlins have now won three straight at LoanDepot Park against the Mariners.
