Washington Nationals vs Seattle Mariners Prediction & Picks - MLB

USA - MLB

Washington Nationals
6/13/26 16:05
Seattle Mariners

Prediction:

 

Over 9 runs.

-101
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 by Carlos Zabala | in MLB Picks

At Camden Yards, a four-game series in which the Mariners took an early lead against the Orioles slipped away, forcing them to settle for splitting it. However, they've started strong again in their weekend series against the Nationals in Washington, handing them a 10-2 rout in the first game.

In that game, the Mariners' second inning was explosive. They scored five runs thanks to a bases-clearing triple by Canzone. That early lead gave Miller the cushion and comfort to work with. And work he did, cruising into the eighth. Canzone not only hit the triple but also his tenth home run of the season, and earlier Emerson hit his fifth. In unfortunate news, Arozarena left the game in the third inning with a leg injury.

These 35-35 Nationals are combative, but they don't seem to be as effective at Nationals Park, where they have a 12-21 record. However, whether it's the nation's capital or another city, James Wood remains Washington's most prolific hitter. He hit his 19th home run of the year in the loss.

Washington Nationals vs Seattle Mariners Form

Table

Teams Pts P W L
10 Seattle Mariners
0.521 71 37 34
14 Washington Nationals
0.5 70 35 35

Washington Nationals and Seattle Mariners Latest Matches

Washington Nationals
Washington Nationals Latest matches
W L W W L L
Victories

3/6 (50%)

Defeats

3/6 (50%)

Jun 12, 2026 - MLB

Washington Nationals
2 :  10
Seattle Mariners

Jun 10, 2026 - MLB

San Francisco Giants
11 :  10
Washington Nationals

Jun 9, 2026 - MLB

San Francisco Giants
3 :  6
Washington Nationals

Jun 8, 2026 - MLB

San Francisco Giants
3 :  4
Washington Nationals

Jun 7, 2026 - MLB

Arizona Diamondbacks
5 :  1
Washington Nationals

Jun 6, 2026 - MLB

Arizona Diamondbacks
1 :  6
Washington Nationals
W W L L L L
Victories

2/6 (33%)

Defeats

4/6 (67%)

Jun 12, 2026 - MLB

Washington Nationals
2 :  10
Seattle Mariners

Jun 3, 2026 - MLB

Washington Nationals
1 :  4
Miami Marlins

Jun 2, 2026 - MLB

Washington Nationals
3 :  7
Miami Marlins

Jun 1, 2026 - MLB

Washington Nationals
3 :  7
Miami Marlins

May 31, 2026 - MLB

Washington Nationals
4 :  2
San Diego Padres

May 30, 2026 - MLB

Washington Nationals
9 :  4
San Diego Padres
W W L W W L
Victories

4/6 (67%)

Defeats

2/6 (33%)

Jun 10, 2026 - MLB

San Francisco Giants
11 :  10
Washington Nationals

Jun 9, 2026 - MLB

San Francisco Giants
3 :  6
Washington Nationals

Jun 8, 2026 - MLB

San Francisco Giants
3 :  4
Washington Nationals

Jun 7, 2026 - MLB

Arizona Diamondbacks
5 :  1
Washington Nationals

Jun 6, 2026 - MLB

Arizona Diamondbacks
1 :  6
Washington Nationals

Jun 5, 2026 - MLB

Arizona Diamondbacks
1 :  14
Washington Nationals
Seattle Mariners
Seattle Mariners Latest matches
L W W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Jun 12, 2026 - MLB

Washington Nationals
2 :  10
Seattle Mariners

Jun 11, 2026 - MLB

Baltimore Orioles
7 :  5
Seattle Mariners

Jun 10, 2026 - MLB

Baltimore Orioles
7 :  2
Seattle Mariners

Jun 9, 2026 - MLB

Baltimore Orioles
5 :  6
Seattle Mariners

Jun 8, 2026 - MLB

Baltimore Orioles
3 :  6
Seattle Mariners

Jun 7, 2026 - MLB

Detroit Tigers
5 :  4
Seattle Mariners
W W W W W L
Victories

5/6 (83%)

Defeats

1/6 (17%)

Jun 3, 2026 - MLB

Seattle Mariners
1 :  7
New York Mets

Jun 2, 2026 - MLB

Seattle Mariners
8 :  3
New York Mets

Jun 1, 2026 - MLB

Seattle Mariners
3 :  2
New York Mets

May 31, 2026 - MLB

Seattle Mariners
3 :  2
Arizona Diamondbacks

May 30, 2026 - MLB

Seattle Mariners
5 :  1
Arizona Diamondbacks

May 29, 2026 - MLB

Seattle Mariners
7 :  6
Arizona Diamondbacks
L W W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Jun 12, 2026 - MLB

Washington Nationals
2 :  10
Seattle Mariners

Jun 11, 2026 - MLB

Baltimore Orioles
7 :  5
Seattle Mariners

Jun 10, 2026 - MLB

Baltimore Orioles
7 :  2
Seattle Mariners

Jun 9, 2026 - MLB

Baltimore Orioles
5 :  6
Seattle Mariners

Jun 8, 2026 - MLB

Baltimore Orioles
3 :  6
Seattle Mariners

Jun 7, 2026 - MLB

Detroit Tigers
5 :  4
Seattle Mariners

Washington Nationals against Seattle Mariners : Head to Head (H2H)

Washington Nationals

50 %

Seattle Mariners

50 %

Jun 12, 2026 - MLB

Washington Nationals
2 :  10
Seattle Mariners

May 24, 2024 - MLB

Washington Nationals
6 :  1
Seattle Mariners

Washington Nationals - Seattle Mariners Key Points

  1. The Nationals' 0-for-2 record this season is 42-25
  2. Emerson is the fourth Mariner in history to hit five home runs before turning 21
  3. The Nationals lead the MLB in runs per game with 5.4
  4. The Nationals are second in MLB in stolen bases this season with 70

Our Washington Nationals vs Seattle Mariners Prediction

The dynamic offense of these young Nationals, combined with their speed on the basepaths, hasn't translated into wins because the pitching has been seriously lacking. The Nats are among the 10 worst in MLB in ERA, WHIP, and K/9 ratio, they've allowed the second-most home runs, and their fielding is the worst in all of MLB.

As for the Mariners, analysts were full of praise during the preseason, saying they had the best rotation in MLB; although it hasn't been terrible, it has fallen short of expectations, especially Castillo, who will start on Saturday with a high ERA of 5.19.

Our prediction for Nationals vs Mariners is: Over 9 runs.

Prediction:

 

Over 9 runs.

-101
$200 offered for betting!

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Washington Nationals vs Seattle Mariners Picks