The surging Seattle Mariners will be looking to keep it rolling tonight as they welcome the Kansas City Royals to T-Mobile Park.
Seattle has won two straight, and my Royals vs. Mariners predictions are eyeing Bryan Woo to set the tone for another victory.
Read more for my MLB picks for Friday, May 1.
Who will win Royals vs Mariners today: Mariners moneyline (-147)
The Seattle Mariners just took two out of three from the Minnesota Twins, winning back-to-back games to close out the series. While Bryan Woo is coming off a difficult start where he allowed seven earned runs, the righty has been dominant at home.
Across two outings in Seattle, Woo sports a 2.77 ERA, holding opponents to a .178 average. He owns a 3.86 ERA overall, and he’s coming up against a Kansas City Royals team that has been underwhelming offensively, averaging just 4.1 runs per game.
On the other side, Cole Ragans allowed seven earned runs in his last road start, and the lefty owns a 5.00 ERA overall. His road ERA balloons to 8.40, despite being dominant at home with an ERA under one. He’s held the M’s to a .194 average, but it’s a very small sample size.
COVERS INTEL: Cole Ragans has a 6.06 FIP so far, the worst of his big league career.
Royals vs Mariners Over/Under pick: Over 7 runs (-110)
While both of these teams rank 20th or worse in runs scored, Seattle, in particular, is producing more lately, scoring 12 runs across this two-game winning streak. Two of the last three meetings have also cashed the Over, and the M’s score more at home, averaging 4.67 runs.
The matchup clearly plays in their favor, too. Ragans has struggled immensely to find any consistency on the road, and Seattle is in a rhythm. Although Woo is wonderful at home, he has been a bit shaky lately, so I could see KC tagging him for a couple of runs as well.
Also, the Royals’ bullpen owns an atrocious 5.33 ERA. Seattle will win, and they will do the majority of the scoring.
- ML/RL bets: 9-9, -4.45 units
- Over/Under bets: 10-8, 0.48 units
Royals vs Mariners odds
- Moneyline: Kansas City +124 | Seattle -137
- Run line: Kansas City +1.5 (-167) | Seattle -1.5 (+140)
- Over/Under: Over 7.5 (+114) | Under 7.5 (-137)
Royals vs Mariners trend
The Seattle Mariners have hit the Moneyline in 34 of their last 50 games at home (+11.90 Units / 14% ROI). Find more MLB betting trends for Royals vs. Mariners.
How to watch Royals vs Mariners and game info
| Location | T-Mobile Park, Seattle, WA |
| Date | Friday, May 1, 2026 |
| First pitch | 9:45 p.m. ET |
| TV | Apple TV |
| Royals starting pitcher | Cole Ragans (1-4, 5.00 ERA) |
| Mariners starting pitcher | Bryan Woo (1-2, 3.86 ERA) |
Royals vs Mariners latest injuries
Royals vs Mariners weather
Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
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