The Minnesota Twins host the Seattle Mariners on April 27, 2026. First pitch from Target Field is scheduled for 7:40 p.m. EDT. The game will be broadcast on MNNT.
The Mariners are favored by -140 on the moneyline and by -1.5 on the run line. The Twins are +118 on the moneyline and +1.5 on the run line. The total is set at 8.5 runs.
Find my MLB picks and Mariners vs Twins prediction below, as well as probable pitchers, weather report, and more.
Mariners vs Twins Prediction
- Mariners vs Twins Pick: Connor Prielipp Over 4.5 Strikeouts (-140)
My Mariners vs Twins best bet is on Connor Prielipp to record over 4.5 strikeouts. Make sure to find the best odds by checking our live MLB odds page.
Mariners vs Twins Odds
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +118 | 8.5 -120o / 100u | -140 |
| Twins Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -140 | 8.5 -120o / 100u | +118 |
- Mariners vs Twins moneyline: Mariners -140, Twins +118
- Mariners vs Twins over/under: 8.5 (-120o / +100u)
- Mariners vs Twins spread: Mariners -1.5 (+118), Twins +1.5 (-140)
Mariners vs Twins Probable Pitchers
| RHP Luis Castillo (SEA) | Stat | LHP Connor Prielipp (MIN) |
|---|---|---|
| 0-1 | W-L | 0-0 |
| 0.5 | fWAR (FanGraphs) | 0.3 |
| 5.01/5.23 | ERA / xERA | 4.50/2.62 |
| 3.56/3.98 | FIP / xFIP | 0.13/1.92 |
| 12.8% | K-BB% | 35.3% |
| 41.3% | GB% | 27.3% |
| .392 | BABIP | .364 |
| 101 | Stuff+ | 112 |
| 110 | Location+ | 120 |
Mariners vs Twins MLB Betting Preview
Seattle Mariners Betting Preview
We have an old guy against a young guy in this one. The Mariners will roll out Luis Castillo to take on the rookie Twins lefty Connor Prielipp.
But let's start with Luis Castillo. He's a long way from the height of his game. He's 33, and the strikeouts have been on the decline for several seasons now.
He dropped below 22% for the first time in his career last year, and he's only barely above 21% in the early going this year. He has the lowest swinging strike rate of his career and his highest walk rate in the last five seasons.
Castillo will go against an uninspiring lineup, but one that is making a lot more contact lately as some of their guys get going. The Twins have a sub-22% K% of their own over these last two weeks. And it is a pretty contact-heavy lineup with guys like Keaschall, Brooks Lee, and Austin Martin getting a lot of looks.
My projections think that Castillo can be pretty efficient against this lineup, giving him a 6.1 inning projection. The model thinks he'll give up 5.7 hits (that's a lot) and strike out six. Castillo is a guy you can make contact against, and that's what I'd like to focus on for betting purposes tonight.
Minnesota Twins Betting Preview
Connor Prielipp, baby! His slider was dominant in his first outing; it's the second-best slider in Stuff+ of the early season (Ryan Helsley clears him barely). His fastball is fine. It had good marks in the minors, as you might expect from a top pitching prospect, but it doesn't look like anything that will dominate Major League hitters.
His splits from the minors aren't what you'd expect. He faced 289 right-handed hitters since 2025 with a 29.4% K%, and against 136 left-handed hitters, he posted a lower 25% K%. A lefty with a nasty slider you'd think would dominate lefties and have some trouble against righties, but that's not what we see.
I'm a stats guy, though. And I can tell you that splits are finicky, and you need enormous sample sizes to start believing in the "reverse splits" thing. You even see it in the SwStr%. He got way more whiffs against lefties in the minors than righties.
So we're thinking he's truly going to be better against lefties in the Majors. I think that's the right read. The M's will have, at most, three lefties in the lineup. But it's not as though their regulars on the right side of the plate are a bunch of contact hitters.
Cal Raleigh and Julio Rodriguez both have contact rates below 70% against lefties this year. This team is hitting just .185 with a 23% team strikeout rate against left-handed sliders this year, so they're beatable.
Mariners vs Twins Pick, Betting Analysis
My projection model says 6.2 strikeouts for Prielipp. I think this guy has a slider that the league will take some time to get used to. And the Mariners are a team you can sit down with the swing-and-miss. So that's where I'm going.
I don't see any pitcher hits allowed lines out as I write this, but my preferred attack method would be something like this:
- Connor Prielipp 4+ Strikeouts
- Luis Castillo 4+ Hits Allowed
That should get you somewhere near -150 or so. But to make it easier, my model does grade the individual Prielipp strikeout overs favorably.
Pick: Connor Prielipp Over 4.5 Strikeouts (-140)
