Pittsburgh Pirates vs Seattle Mariners Prediction & Picks - MLB

USA - MLB

Pittsburgh Pirates
6/23/26 18:40
Seattle Mariners

Prediction:

 

Pirates to win

-105
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 by Simon Day in MLB Picks

The AL West topping Seattle Mariners will be bidding to bounce back from a series loss to the Red Sox when they visit the Pittsburgh Pirates for a three-game series at PNC Park this week.

Game one of the series takes place on Tuesday night, and the Mariners are likely to put their faith in pitcher George Kirby, despite his run of five defeats from his last six starts. For the Pirates, Mitch Keller will be the man tasked with halting the Mariners' offence. Keller has endured a tough season, but he performed extremely well last week, helping his side secure a key victory over the Athletics. 

Both sides will come into Tuesday's game in relatively poor form. The Mariners have seen their AL West lead cut to just one win following a run of just four victories from their last ten games. Meanwhile, the Pirates have dropped to fourth in the NL Central division, having also lost six of their last ten fixtures. 

Pittsburgh Pirates vs Seattle Mariners Form

Table

Teams Pts P W L
13 Seattle Mariners
0.5 84 42 42
16 Pittsburgh Pirates
0.494 83 41 42

Pittsburgh Pirates and Seattle Mariners Latest Matches

Pittsburgh Pirates
Pittsburgh Pirates Latest matches
L W W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Jun 21, 2026 - MLB

Colorado Rockies
6 :  8
Pittsburgh Pirates

Jun 20, 2026 - MLB

Colorado Rockies
2 :  1
Pittsburgh Pirates

Jun 19, 2026 - MLB

Colorado Rockies
4 :  3
Pittsburgh Pirates

Jun 17, 2026 - MLB

Athletics
4 :  12
Pittsburgh Pirates

Jun 16, 2026 - MLB

Athletics
5 :  6
Pittsburgh Pirates

Jun 15, 2026 - MLB

Athletics
11 :  2
Pittsburgh Pirates
L W L L W L
Victories

2/6 (33%)

Defeats

4/6 (67%)

Jun 14, 2026 - MLB

Pittsburgh Pirates
2 :  4
Miami Marlins

Jun 13, 2026 - MLB

Pittsburgh Pirates
3 :  2
Miami Marlins

Jun 12, 2026 - MLB

Pittsburgh Pirates
3 :  8
Miami Marlins

Jun 11, 2026 - MLB

Pittsburgh Pirates
6 :  8
Los Angeles Dodgers

Jun 10, 2026 - MLB

Pittsburgh Pirates
9 :  8
Los Angeles Dodgers

Jun 9, 2026 - MLB

Pittsburgh Pirates
3 :  12
Los Angeles Dodgers
L W W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Jun 21, 2026 - MLB

Colorado Rockies
6 :  8
Pittsburgh Pirates

Jun 20, 2026 - MLB

Colorado Rockies
2 :  1
Pittsburgh Pirates

Jun 19, 2026 - MLB

Colorado Rockies
4 :  3
Pittsburgh Pirates

Jun 17, 2026 - MLB

Athletics
4 :  12
Pittsburgh Pirates

Jun 16, 2026 - MLB

Athletics
5 :  6
Pittsburgh Pirates

Jun 15, 2026 - MLB

Athletics
11 :  2
Pittsburgh Pirates
Seattle Mariners
Seattle Mariners Latest matches
W L W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Jun 21, 2026 - MLB

Seattle Mariners
3 :  1
Boston Red Sox

Jun 20, 2026 - MLB

Seattle Mariners
1 :  5
Boston Red Sox

Jun 19, 2026 - MLB

Seattle Mariners
2 :  6
Boston Red Sox

Jun 18, 2026 - MLB

Seattle Mariners
3 :  0
Baltimore Orioles

Jun 17, 2026 - MLB

Seattle Mariners
3 :  5
Baltimore Orioles

Jun 16, 2026 - MLB

Seattle Mariners
3 :  1
Baltimore Orioles
W L W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Jun 21, 2026 - MLB

Seattle Mariners
3 :  1
Boston Red Sox

Jun 20, 2026 - MLB

Seattle Mariners
1 :  5
Boston Red Sox

Jun 19, 2026 - MLB

Seattle Mariners
2 :  6
Boston Red Sox

Jun 18, 2026 - MLB

Seattle Mariners
3 :  0
Baltimore Orioles

Jun 17, 2026 - MLB

Seattle Mariners
3 :  5
Baltimore Orioles

Jun 16, 2026 - MLB

Seattle Mariners
3 :  1
Baltimore Orioles
W L L W L L
Victories

2/6 (33%)

Defeats

4/6 (67%)

Jun 14, 2026 - MLB

Washington Nationals
10 :  1
Seattle Mariners

Jun 13, 2026 - MLB

Washington Nationals
8 :  3
Seattle Mariners

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

Pittsburgh Pirates against Seattle Mariners : Head to Head (H2H)

Pittsburgh Pirates

20 %

Seattle Mariners

80 %

Jul 6, 2025 - MLB

Seattle Mariners
1 :  0
Pittsburgh Pirates

Jul 5, 2025 - MLB

Seattle Mariners
1 :  0
Pittsburgh Pirates

Jul 4, 2025 - MLB

Seattle Mariners
6 :  0
Pittsburgh Pirates

Aug 18, 2024 - MLB

Pittsburgh Pirates
3 :  10
Seattle Mariners

Aug 16, 2024 - MLB

Pittsburgh Pirates
5 :  3
Seattle Mariners

Pittsburgh Pirates - Seattle Mariners Key Points

  1. Seattle have lost 4 of their last 5 road games
  2. Pittsburgh are 20-19 at home this season
  3. The Mariners have conceded over 6 runs in 4 of their last 5 games
  4. Seattle are 18-20 on the road this season

Our Pittsburgh Pirates vs Seattle Mariners Prediction

Whilst the Mariners are sitting pretty at the top of their division, their record is almost identical to that of the lowly Pirates. 

As such, we expect this to be a razor-tight contest with little to choose between the sides. 

Ultimately, the two starting pitchers are likely to be the deciding factors, and whilst George Kirby is clearly highly talented, his recent displays have been below par. With that in mind, we are taking Mitch Keller to get the job done for the hosts.

Our prediction for Pittsburgh Pirates vs Seattle Mariners is: Pirates to win. 

Prediction:

 

Pirates to win

-105
$200 offered for betting!

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All tips are fully researched and given in good faith, but profits cannot be guaranteed.

Pittsburgh Pirates vs Seattle Mariners Picks