Royals vs Mariners Prediction, Picks, and Odds for Today's MLB Game

The Royals are a pesky team. They make a ton of contact and irritate opposing pitchers. With the Mariners trotting Bryan Woo out for just his first start since a forearm injury forced him out of action, KC could see the bullpen plenty.

May 15, 2024 • 10:13 ET • 4 min read
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This article contains predictions for an old game!

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Salvador Perez Kansas City Royals MLB
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Kansas City Royals righty Alec Marsh is 2-0 across his three away starts yet enters this matchup with the Seattle Mariners as a short MLB odds underdog in today’s rubber game of their three-game series. 

Mariners starter Bryan Woo has injury concerns, and our MLB picks expect a favorable outcome for Kansas City. Get our full Royals vs Mariners predictions for Wednesday, May 15.

Royals vs Mariners prediction

My best bet
Royals moneyline (+124 at DraftKings)

My analysis

This three-game series between the Kansas City Royals and Seattle Mariners has been solid. It has been marked by decent pitching and timely hitting, and I expect more of this in their series finale. 

Royals starter Alec Marsh has terrific away numbers; the righty has scattered 11 hits with 14 strikeouts across 17 1/3 frames. That has resulted in a 2-0 mark for Marsh, and Kansas City is 3-0 when the 26-year-old righty makes an away start.

Marsh has been terrific against lefties, using a four-seam/curveball combo, and he handles righties rather effectively with his slider/sinker combo. He’s been more effective against left-handed lumber but is above-average against righties, and he’ll see a bunch of strikeout-prone right-handed bats today.

Seattle plans for righty Bryan Woo to make his second start of the season. Woo looked good before suffering some forearm tightness and exited after 62 pitches. He scattered one hit with three strikeouts without surrendering an earned run through 4 1/3 frames but meets a good-hitting, low-strikeout bunch of lumber from Kansas City, and they will get him today.

Piecing together a couple of runs at a time is how teams beat Woo, which is exactly what the Royals do. They don’t create many runs against righties (wRC+95), but they look to make contact, have huge power from both sides of the plate, and find ways to score by stealing bases (35) while hitting .241 with runners in scoring position. 

Finally, Woo has a history of arm tightness following stints on the IL. The tightness could shorten his stint, and the Royals will scratch out a couple of runs before he exits with Marsh junk-balling his way through the strikeout-prone Mariners lineup. The Royals bullpen ranks 10th in holds (27) with fewer blown saves than Seattle and is more trustworthy in holding a lead.

Kansas City sneaks out of Seattle with a win today. 

Royals vs Mariners same-game parlay (SGP)

Royals moneyline

Salvador Perez 1+ hit

Vinnie Pasquantino 1+ hit

Royals DH Salvador Perez has hits in three of his last five and is hitting .326 with 15 hits across 46 away bats against righties. He’ll be good for a hit, as will teammate Vinnie Pasquantino.

Woo has always struggled against left-handers, and Pasquantino has recorded a hit in seven of his last 10. The Royals lefty has a couple of home runs and 10 hits this season against home righties, so he should get one hit today. 

Learn how to bet a same-game parlay with these helpful tips and strategies.

Royals vs Mariners odds

Royals vs Mariners live odds

Royals vs Mariners opening odds

  • Run line: Kansas City +1.5 (-170) | Seattle -1.5 (+142)
  • Moneyline: Kansas City +124 | Seattle -148
  • Over/Under: Over 7.5 (-118) | Under 7.5 (-102)

Royals vs Mariners spread and Over/Under analysis

  • Money moved the moneyline odds in the Mariners' direction. They are trading anywhere from -142 to -145, while Royals markets report odds from +120 to +124.
  • Over 7.5 markets are trading from -118 to -120, with Over 8 markets priced from -104 to -105 across the industry.
  • Under 7.5 runs trade from +100 to -102, with Under 8 trading at odds of -118 to -125.

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Royals vs Mariners trend

The Royals have hit the moneyline in 13 of their last 21 games (+4.65 Units / 20% ROI). Find more MLB betting trends for Royals vs Mariners.

Royals vs Mariners game info

Location: T-Mobile Park, Seattle, WA
Date: Wednesday, 5-15-2024
First pitch: 4:10 p.m. ET
Royals starting pitcher: Alex Marsh
(3-0, 2.53 ERA)
Mariners starting pitcher: Bryan Woo
(0-0, 0.00 ERA)

Royals vs Mariners latest injuries

Royals vs Mariners weather

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