The Washington Nationals host the Seattle Mariners on June 14, 2026. First pitch from Nationals Park is scheduled for 1:35 p.m. EDT. The game will be broadcast on SEAM.
The Mariners are favored by -154 on the moneyline and by -1.5 on the run line. The Nationals are +130 on the moneyline and +1.5 on the run line. The total is set at 10 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 Picks:
- Mariners F5 ML
- Randy Arozarena Over 2.5 HRR
- Randy Arozarena Home Run
Mariners vs Nationals Odds
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 -125 | 10.5 -102o / -126u | -153 |
| Nationals Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 +105 | 10.5 -102o / -126u | +127 |
Mariners vs Nationals Probable Pitchers
| Emerson Hancock (RHP, SEA) | Stat | Miles Mikolas (RHP, WSN) |
|---|---|---|
| 5-2 | W-L | 1-5 |
| 1.1 | fWAR (FanGraphs) | -0.6 |
| 2.74 / 4.37 | ERA / xERA | 5.90 / 5.00 |
| 3.73 / 3.59 | FIP / xFIP | 5.63 / 4.54 |
| 19.2% | K-BB% | 8.4% |
| 41.4% | GB% | 45.4% |
| .239 | BABIP | .268 |
| 102 | Stuff+ | 90 |
| 106 | Location+ | 111 |
Mariners vs Nationals MLB Betting Preview
The Mariners continue on their road trip in D.C. on Sunday afternoon in what will be the last of a three-game set at Nationals Park.
Miles Mikolas will take the mound for the Nats, while Seattle trots out right-hander Emerson Hancock, who is having a phenomenal fourth season in the Big Leagues.
Though the game will be played in D.C., the Mariners undoubtedly have a massive pitching edge, which I expect to directly impact the outcome of Sunday’s contest.
Across his first 13 outings to kick off his 2026 campaign, Hancock has recorded an exceptional 2.74 ERA thus far, which ranks inside the top-20 amongst starting pitchers.
Hancock has been just as efficient as well, currently posting a 0.95 WHIP on the mound, which ranks sixth in all of baseball.
The same can't be said of Mikolas, who has been one of the worst pitchers in all of baseball to start the season.
Mikolas has recorded a 5.90 ERA across 14 appearances on the mound in 2026, which ranks as the second-worst mark in the 15 seasons he has been pitching in the MLB.
Mariners vs Nationals Pick, Betting Analysis
I definitely favor backing the Mariners to prevail on the F5 ML as my first betting angle ahead of Sunday afternoon's interleague clash.
As a secondary betting angle, I will be looking to target some of Seattle’s player prop markets given Mikolas’ vast struggles on the mound this season.
Specifically, I expect Mariners’ righty slugger Randy Arozarena to have a massive day at the plate versus the Nats’ veteran, whom he has demolished in 11 career plate appearances between the two of them.
Arozarena has recorded five hits across those 11 at-bats against the Nats’ veteran, including a double and a homer.
That said, I feel great backing Arozarena to exceed an alternate 2.5 HRR (Hits + Runs + RBIs) in a game he will likely find himself on the base paths, considering Mikolas’ vast command issues in 2026.
Given how much I favor this matchup for Arozarena, I will also be taking a shot on him to smash a homer on Sunday afternoon.
Picks:
- Mariners F5 ML
- Randy Arozarena Over 2.5 HRR
- Randy Arozarena Home Run
