The Washington Nationals host the Seattle Mariners on June 12, 2026. First pitch from Nationals Park is scheduled for 6:45 p.m. EDT. The game will be broadcast on NATS.
The Mariners are favored by -149 on the moneyline and by -1.5 on the run line. The Nationals are +124 on the moneyline and +1.5 on the run line. The total is set at 9 runs.
Find my MLB picks and Mariners vs Nationals prediction below, as well as probable pitchers, weather report, and more.
Mariners vs Nationals Prediction
- Mariners vs Nationals Pick: Nasim Nunez Over 0.5 Stolen Bases (+309 or Better)
My Mariners vs Nationals best bet is a prop on Washington infielder Nasim Nunez. Make sure to find the best odds by checking our live MLB odds page.
Mariners vs Nationals Odds
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 -133 | 9 -121o / +100u | -149 |
| Nationals Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 +110 | 9 -121o / +100u | +124 |
- Mariners vs Nationals moneyline: Mariners -149, Nationals +124
- Mariners vs Nationals over/under: 9 (-121o / +100u)
- Mariners vs Nationals spread: Mariners -1.5 (+110), Nationals +1.5 (-133)
Mariners vs Nationals Probable Pitchers
| RHP Bryce Miller (SEA) | Stat | RHP Zack Littell (WAS) |
|---|---|---|
| 2-0 | W-L | 6-4 |
| 0.9 | fWAR (FanGraphs) | -0.5 |
| 1.33 / 1.83 | ERA / xERA | 4.76 / 5.91 |
| 2.47 / 2.97 | FIP / xFIP | 5.95 / 5.25 |
| 24.2% | K-BB% | 6.8% |
| 41.3% | GB% | 35.5% |
| .222 | BABIP | .243 |
| 111 | Stuff+ | 83 |
| 111 | Location+ | 97 |
Mariners vs Nationals MLB Betting Preview
The prop I’m targeting today is Nasim Nunez to steal a base.
This is one of my favorite stolen-base spots on the board because the matchup grades out exceptionally well in my stolen-base model. Assuming Mitch Garver is behind the plate, this matchup lands in the 96th percentile when combining the pitcher, catcher and bullpen factors that influence stolen-base opportunities.
Nunez has already gone 25-for-28 on stolen-base attempts this season, so we know he’s both aggressive and efficient once he gets on base. The matchup only enhances that strength. Bryce Miller is relatively easy to run on, Seattle’s bullpen is favorable for stolen-base opportunities, and Garver has historically been a catcher runners like to attack.
If Nunez reaches base, the runway is there. At +420, and even down to around +310, I think there’s clear value on him swiping a bag in one of the best base-stealing environments available today.
Pick: Nasim Nunez Over 0.5 Stolen Bases (+309 or Better)
