Kansas City Royals vs Seattle Mariners Prediction & Picks - MLB

USA - MLB

Kansas City Royals
5/22/26 19:40
Seattle Mariners

Prediction:

 

Seattle Mariners ML

-136
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 by Matt Lowrimore | in MLB Picks

A 15-game MLB slate is scheduled for Friday, one of which will feature an American League matchup between the Kansas City Royals and the Seattle Mariners. Let’s take a look at the match statistics and predictions for this game between the Royals and the Mariners.

Seattle continues to sit under .500, with an overall record of 24-27. That being said, the Mariners are just 2.0 games back in the AL West. For Game 1 of this series, the Mariners are scheduled to start Logan Gilbert. He has a record of 2-4 on the season and an ERA of 4.45. Despite the below-average ERA, Gilbert has been lights out when pitching on the road this season. 

As for Kansas City, their struggles have only gotten worse, as they were just swept by the Boston Red Sox. The Royals are now 20-30 on the season and fading quickly in the AL Central. Starting Game 1 for Kansas City is set to be Noah Cameron, who has a record of 2-3 and an ERA of 5.40. His home starts this season have been far from impressive, which further casts doubt on backing the Royals in this game.

Kansas City Royals vs Seattle Mariners Form

Table

Teams Pts P W L
24 Seattle Mariners
0.471 119 56 63
27 Kansas City Royals
0.412 119 49 70

Kansas City Royals and Seattle Mariners Latest Matches

Kansas City Royals
Kansas City Royals Latest matches
L L W L L L
Victories

1/6 (17%)

Defeats

5/6 (83%)

May 20, 2026 - MLB

Kansas City Royals
3 :  4
Boston Red Sox

May 19, 2026 - MLB

Kansas City Royals
1 :  7
Boston Red Sox

May 18, 2026 - MLB

Kansas City Royals
1 :  3
Boston Red Sox

May 17, 2026 - MLB

St. Louis Cardinals
0 :  2
Kansas City Royals

May 16, 2026 - MLB

St. Louis Cardinals
4 :  2
Kansas City Royals

May 15, 2026 - MLB

St. Louis Cardinals
5 :  4
Kansas City Royals
W W L L L L
Victories

2/6 (33%)

Defeats

4/6 (67%)

May 20, 2026 - MLB

Kansas City Royals
3 :  4
Boston Red Sox

May 19, 2026 - MLB

Kansas City Royals
1 :  7
Boston Red Sox

May 18, 2026 - MLB

Kansas City Royals
1 :  3
Boston Red Sox

May 10, 2026 - MLB

Kansas City Royals
3 :  6
Detroit Tigers

May 9, 2026 - MLB

Kansas City Royals
5 :  1
Detroit Tigers

May 8, 2026 - MLB

Kansas City Royals
4 :  3
Detroit Tigers
L L L L L W
Victories

1/6 (17%)

Defeats

5/6 (83%)

May 17, 2026 - MLB

St. Louis Cardinals
0 :  2
Kansas City Royals

May 16, 2026 - MLB

St. Louis Cardinals
4 :  2
Kansas City Royals

May 15, 2026 - MLB

St. Louis Cardinals
5 :  4
Kansas City Royals

May 14, 2026 - MLB

Chicago White Sox
6 :  2
Kansas City Royals

May 13, 2026 - MLB

Chicago White Sox
6 :  5
Kansas City Royals

May 12, 2026 - MLB

Chicago White Sox
6 :  5
Kansas City Royals
Seattle Mariners
Seattle Mariners Latest matches
L L L W L W
Victories

2/6 (33%)

Defeats

4/6 (67%)

May 20, 2026 - MLB

Seattle Mariners
5 :  4
Chicago White Sox

May 19, 2026 - MLB

Seattle Mariners
1 :  2
Chicago White Sox

May 18, 2026 - MLB

Seattle Mariners
6 :  1
Chicago White Sox

May 17, 2026 - MLB

Seattle Mariners
3 :  8
San Diego Padres

May 16, 2026 - MLB

Seattle Mariners
4 :  7
San Diego Padres

May 15, 2026 - MLB

Seattle Mariners
0 :  2
San Diego Padres
L L L W L W
Victories

2/6 (33%)

Defeats

4/6 (67%)

May 20, 2026 - MLB

Seattle Mariners
5 :  4
Chicago White Sox

May 19, 2026 - MLB

Seattle Mariners
1 :  2
Chicago White Sox

May 18, 2026 - MLB

Seattle Mariners
6 :  1
Chicago White Sox

May 17, 2026 - MLB

Seattle Mariners
3 :  8
San Diego Padres

May 16, 2026 - MLB

Seattle Mariners
4 :  7
San Diego Padres

May 15, 2026 - MLB

Seattle Mariners
0 :  2
San Diego Padres
L L W W L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

May 14, 2026 - MLB

Houston Astros
3 :  8
Seattle Mariners

May 13, 2026 - MLB

Houston Astros
4 :  3
Seattle Mariners

May 12, 2026 - MLB

Houston Astros
2 :  10
Seattle Mariners

May 11, 2026 - MLB

Houston Astros
1 :  3
Seattle Mariners

May 10, 2026 - MLB

Chicago White Sox
2 :  1
Seattle Mariners

May 9, 2026 - MLB

Chicago White Sox
6 :  1
Seattle Mariners

Kansas City Royals against Seattle Mariners : Head to Head (H2H)

Kansas City Royals

50 %

Seattle Mariners

50 %

May 3, 2026 - MLB

Seattle Mariners
1 :  4
Kansas City Royals

May 2, 2026 - MLB

Seattle Mariners
2 :  3
Kansas City Royals

May 1, 2026 - MLB

Seattle Mariners
6 :  7
Kansas City Royals

Mar 10, 2026 - MLB Spring Training

Seattle Mariners
4 :  3
Kansas City Royals

Feb 25, 2026 - MLB Spring Training

Kansas City Royals
8 :  8
Seattle Mariners

Sep 18, 2025 - MLB

Kansas City Royals
0 :  2
Seattle Mariners
Kansas City Royals vs Seattle Mariners Picks

Kansas City Royals - Seattle Mariners Key Points

  1. Logan Gilbert has an ERA of 4.45 this season
  2. Logan Gilbert has an ERA of 1.59 on the road this season
  3. Noah Cameron has an ERA of 5.40 this season
  4. Noah Cameron has an ERA of 5.23 at home this season

Our Kansas City Royals vs Seattle Mariners Prediction

Seattle is the favorite in this game and looks to be the best betting option. As mentioned, Gilbert’s overall numbers have been shaky. That said, in three road starts this season, he has allowed just three earned runs over 17.0 innings.

Cameron, on the other hand, has struggled regardless of where he has pitched. In four home starts, he has allowed 12 earned runs over 20.2 innings. Therefore, because Cameron has been inconsistent in almost every start he has made this season and because the Royals were just swept by the Red Sox, our Kansas City Royals vs Seattle Mariners prediction is: Seattle Mariners ML.

Prediction:

 

Seattle Mariners ML

-136
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All tips are fully researched and given in good faith, but profits cannot be guaranteed.