Both the Seattle Mariners and the New York Mets will be looking to break two-game losing streaks at Citi Field on Friday night.
New York is desperately in need of wins, but my Mariners vs. Mets predictions are taking Seattle to prevail in tonight’s showdown.
Let’s break down what we can expect from tonight’s game in my free MLB picks for Friday, August 15.
Mariners vs Mets prediction
Mariners vs Mets best bet: Mariners moneyline (+104)
It’s difficult to figure out exactly what’s going on with the New York Mets right now. For a while, New York was struggling to score runs. Now it's pitching that's letting the team down more frequently, allowing 6.8 runs per game over the last five contests.
The hope was that the return of Sean Manaea would bolster the Mets rotation, as he did in 2024. So far, his results have been a mixed bag at best.
Manaea has posted a 4.33 ERA in 27 innings of work, and has been particularly poor in his last two starts. He’s allowed at least four earned runs in each of those outings, giving up a homer in both appearances.
The Seattle Mariners have been productive on offense, averaging 4.54 runs per game. They have bats that perform well against lefties, including Julio Rodriguez and Cal Raleigh. And starter Luis Castillo (8-6, 3.19 ERA) is having one of his better years so far in 2025.
It’s hard to bet on the Mets right now, and this matchup doesn’t look promising for them. With plus money on Seattle, I’m taking the Mariners to win outright.
Mariners vs Mets same-game parlay (SGP)
My questions over Manaea are enough for me to pair the Mariners with the Over for my SGP tonight. I’m also throwing in a bet on Julio Rodriguez to pick up at least one RBI.
Rodriguez homered on Thursday night, has a strong matchup against Manaea, and the odds were too good not to include in my parlay.
Mariners vs Mets odds
- Moneyline: Seattle +104 | New York -115
- Run line: Seattle +1.5 | New York -1.5
- Over/Under: Over 8 | Under 8
Mariners vs Mets trend
The Mets are 2-13 in their last 15 games overall. Find more MLB betting trends for Mariners vs. Mets.
How to watch Mariners vs Mets and game info
| Location | Citi Field, Queens, NY |
| Date | Friday, August 15, 2025 |
| First pitch | 7:10 p.m. ET |
| TV | RSNW, SNY |
| Mariners starting pitcher | Luis Castillo (8-6, 3.19 ERA) |
| Mets starting pitcher | Sean Manaea (1-1, 4.33 ERA) |
Mariners vs Mets latest injuries
Mariners vs Mets weather
Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
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