Seattle Mariners vs Kansas City Royals Prediction & Picks - MLB

USA - MLB

Seattle Mariners
5/1/26 21:45
Kansas City Royals

Prediction:

 

Seattle Mariners ML

-156
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 by Matt Lowrimore | in MLB Picks

Friday’s MLB slate will feature 15 games, and every team in the league will be in action. One of these games will be an American League matchup and will see the Seattle Mariners take on the Kansas City Royals. Let’s take a look at the match statistics and predictions for this game between the Mariners and the Royals.

Kansas City is another team that has been struggling so far this season, but will be looking to turn things around in Game 1 of this series. Starting this game for the Royals will be Cole Ragans, who has a record of 1-4 and an ERA of 5.00. He has mightily struggled on the road this season, suggesting a solid Seattle offense will be able to get to him early.

As for Seattle, they are finally back to .500 after a tough start, but having won seven of their last 10 games has them in a decent spot to pick up another win on Friday night. The Mariners are set to start Bryan Woo, who has a record of 1-2 and an ERA of 3.86. Woo has been most effective at home this season; therefore, he looks to be in line to shut down a below-average Royals’ offense.

Seattle Mariners vs Kansas City Royals Form

Table

Teams Pts P W L
13 Seattle Mariners
0.5 84 42 42
29 Kansas City Royals
0.405 84 34 50

Seattle Mariners and Kansas City Royals Latest Matches

Seattle Mariners
Seattle Mariners Latest matches
W W W L W W
Victories

5/6 (83%)

Defeats

1/6 (17%)

Apr 29, 2026 - MLB

Minnesota Twins
3 :  5
Seattle Mariners

Apr 28, 2026 - MLB

Minnesota Twins
1 :  7
Seattle Mariners

Apr 27, 2026 - MLB

Minnesota Twins
11 :  4
Seattle Mariners

Apr 26, 2026 - MLB

St. Louis Cardinals
2 :  3
Seattle Mariners

Apr 25, 2026 - MLB

St. Louis Cardinals
9 :  11
Seattle Mariners

Apr 24, 2026 - MLB

St. Louis Cardinals
2 :  3
Seattle Mariners
L W W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Apr 22, 2026 - MLB

Seattle Mariners
5 :  4
Athletics

Apr 21, 2026 - MLB

Seattle Mariners
2 :  5
Athletics

Apr 20, 2026 - MLB

Seattle Mariners
4 :  6
Athletics

Apr 19, 2026 - MLB

Seattle Mariners
5 :  2
Texas Rangers

Apr 18, 2026 - MLB

Seattle Mariners
7 :  3
Texas Rangers

Apr 17, 2026 - MLB

Seattle Mariners
0 :  5
Texas Rangers
W W W L W W
Victories

5/6 (83%)

Defeats

1/6 (17%)

Apr 29, 2026 - MLB

Minnesota Twins
3 :  5
Seattle Mariners

Apr 28, 2026 - MLB

Minnesota Twins
1 :  7
Seattle Mariners

Apr 27, 2026 - MLB

Minnesota Twins
11 :  4
Seattle Mariners

Apr 26, 2026 - MLB

St. Louis Cardinals
2 :  3
Seattle Mariners

Apr 25, 2026 - MLB

St. Louis Cardinals
9 :  11
Seattle Mariners

Apr 24, 2026 - MLB

St. Louis Cardinals
2 :  3
Seattle Mariners
Kansas City Royals
Kansas City Royals Latest matches
W W W W L L
Victories

4/6 (67%)

Defeats

2/6 (33%)

Apr 30, 2026 - MLB

Athletics
6 :  3
Kansas City Royals

Apr 29, 2026 - MLB

Athletics
5 :  2
Kansas City Royals

Apr 28, 2026 - MLB

Athletics
1 :  4
Kansas City Royals

Apr 26, 2026 - MLB

Kansas City Royals
11 :  9
Los Angeles Angels

Apr 25, 2026 - MLB

Kansas City Royals
12 :  1
Los Angeles Angels

Apr 24, 2026 - MLB

Kansas City Royals
6 :  3
Los Angeles Angels
L W L W W W
Victories

4/6 (67%)

Defeats

2/6 (33%)

Apr 26, 2026 - MLB

Kansas City Royals
11 :  9
Los Angeles Angels

Apr 25, 2026 - MLB

Kansas City Royals
12 :  1
Los Angeles Angels

Apr 24, 2026 - MLB

Kansas City Royals
6 :  3
Los Angeles Angels

Apr 22, 2026 - MLB

Kansas City Royals
6 :  8
Baltimore Orioles

Apr 21, 2026 - MLB

Kansas City Royals
6 :  5
Baltimore Orioles

Apr 20, 2026 - MLB

Kansas City Royals
5 :  7
Baltimore Orioles
L L L W L L
Victories

1/6 (17%)

Defeats

5/6 (83%)

Apr 30, 2026 - MLB

Athletics
6 :  3
Kansas City Royals

Apr 29, 2026 - MLB

Athletics
5 :  2
Kansas City Royals

Apr 28, 2026 - MLB

Athletics
1 :  4
Kansas City Royals

Apr 19, 2026 - MLB

New York Yankees
7 :  0
Kansas City Royals

Apr 18, 2026 - MLB

New York Yankees
13 :  4
Kansas City Royals

Apr 17, 2026 - MLB

New York Yankees
4 :  2
Kansas City Royals

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

Seattle Mariners

67 %

Kansas City Royals

33 %

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

Sep 17, 2025 - MLB

Kansas City Royals
7 :  5
Seattle Mariners

Sep 16, 2025 - MLB

Kansas City Royals
5 :  12
Seattle Mariners

Jul 3, 2025 - MLB

Seattle Mariners
2 :  3
Kansas City Royals

Seattle Mariners - Kansas City Royals Key Points

  1. Cole Ragans has an ERA of 5.00 this season
  2. Cole Ragans has an ERA of 8.40 on the road this season
  3. Bryan Woo has an ERA of 3.86 this season
  4. Bryan Woo has an ERA of 2.77 at home this season

Our Seattle Mariners vs Kansas City Royals Prediction

Seattle is the clear favorite in this game; however, they still look to be the best betting option. Going back to the home/away splits for the starting pitchers, Woo has allowed four earned runs over 13.0 innings in two starts for the Mariners this season.

Ragans, on the other hand, has allowed 14 earned runs over 15.0 innings in four away starts for the Royals. 

On top of that, Seattle’s offense, while ranked 17th in runs per game, is still far better compared to Kansas City’s. For that reason, our Seattle Mariners vs Kansas City Royals prediction is: Seattle Mariners ML.

Prediction:

 

Seattle Mariners ML

-156
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Seattle Mariners vs Kansas City Royals Picks