SportsJaw
LeaderboardToday's GamesBest BetsLive OddsMake Picks
Login / Sign In
Today's GamesLatest PredictionsToday’s Best BetsLive OddsTeam PredictionsHead-to-Head MatchupsSJ CoinsAbout SportsJawContact UsLogin / Sign In
HomeMatchupsMake PicksLeaders
SportsJaw

The social platform for sports bettors.

Explore SportsJaw

  • Today’s Picks
  • Predictions
  • Best Bets
  • Leaderboard
  • Make Picks
  • Live Odds
  • Consensus Picks
  • Team Predictions
  • Head-to-Head
  • Game Briefing

Picks by Sport

  • NFL Picks
  • NCAAF Picks
  • NBA Picks
  • NCAAB Picks
  • MLB Picks
  • NHL Picks

About SportsJaw

  • How It Works
  • SJ Coins
  • Terms
  • Privacy
  • Contact Us

21+. Gambling problem? Call 1-800-GAMBLER. Picks are opinions, not guarantees. Past results do not predict future outcomes.

© 2026 SportsJaw. For entertainment purposes only. SportsJaw does not accept or place wagers.

  1. Home
  2. MLB Picks
  3. Seattle Mariners vs Kansas City Royals
Sat 4:10 PM ET
Seattle Mariners logo
Seattle
Mariners4
L. Castillo RHP
versus
Kansas City Royals logo
Kansas City
Royals8
A. Marsh RHP
Final
Team123456789T
Seattle Mariners1000210004
Kansas City Royals110032

Seattle Mariners vs Kansas City Royals Betting Picks & Predictions

Game time: June 8, 2024 at 4:10 PM ET

Venue: Kauffman Stadium — Kansas City, Missouri

Article updated Jun 7, 10:35 PM EDT

Published by SportsJaw Editorial Team

On Saturday's busy sports schedule, the Seattle Mariners are set to face off against the Kansas City Royals in an MLB matchup. Luis Castillo will be starting for the

Game outlook

On Saturday's busy sports schedule, the Seattle Mariners are set to face off against the Kansas City Royals in an MLB matchup. Luis Castillo will be starting for the Mariners, while Alec Marsh will be on the mound for the Royals. The game is scheduled to begin at 4:10 ET at Kauffman Stadium in Kansas City, MO. Seattle is the betting favorite with an opening line of -135 that has remained steady.

Betting Odds

Moneyline: Mariners -135 | Royals +124

Spread: Mariners -1.5 (+120) | Royals +1.5 (-141)

Total: Over/Under 8.5 (-110)

Based on the moneyline, the implied probability that Seattle will win straight-up is 57%.

Seattle Mariners

The Seattle Mariners have been quietly excelling in the baseball world, despite not grabbing as much attention as other teams in the A.L. West. They currently hold the divisional lead at 36-28, sitting 5.0 games above the defending champion Rangers. Oddsmakers are starting to recognize their success, pricing them at -210 to win the West. The Mariners have been on a hot streak, winning nine of their last 11 games. Their top-tier rotation, led by Castillo, has been a key factor in their success. Castillo boasts a 2.99 ERA and 1.15 WHIP this season. Seattle ranks 28th in offense, scoring an average of 3.73 runs per game, but their defense has been strong, allowing an average of 3.62 runs per game against them. Overall, the Mariners have a power ranking of 14 and are showing promise as contenders in the baseball world.

0
1
—
8
MLB · Seattle Mariners at Kansas City Royals

Your Picks on Mariners vs Royals

Picks closed
Runline
Moneyline
Total

21+. Gambling problem? Call 1-800-GAMBLER. Picks are opinions, not guarantees. Past results do not predict future outcomes.

Kansas City Royals Analysis

The Kansas City Royals are currently positioned as a strong contender this season, with a record of 37-26 and trailing the Cleveland Guardians by 4.0 games in the standings. They are priced at +310 to win the division and +2,800 to win the championship. Despite recent struggles, the Royals have a solid power ranking of 6 in both offense and defense. Alec Marsh will be starting for the Royals in their upcoming game, coming in with a 69-93 record, a 3.76 ERA, and a 1.15 WHIP. The Royals recently split a series against the Guardians and have a record of 3-7 in their last 10 games. In their previous matchups, Seattle went 1-2 against Kansas City.

Mariners Favored Over Royals in Under-the-Radar MLB Series

The upcoming MLB series between two contenders in America's heartland is poised to be an under-the-radar matchup. The Mariners, currently in better form with a 9-2 record in their last 11 games, are expected to have a sizable edge against the Royals. With Seattle at -138 on the moneyline, there is potential for discount value. The decision to back the Mariners in this game, particularly with Luis Castillo pitching, seems favorable. Alec Marsh, the right-hander for the Royals, has struggled in his recent outings with a 7.5 ERA over his last two starts. Additionally, the Seattle offense has historically performed well against Marsh, with the current roster boasting a .273/.347/.432 slash line over 44 at-bats. Considering these factors, a strategic play on the Mariners is the recommended course of action for this matchup.

SportsJawGame Predictions
Predicted score

Unavailable for this preview

Projected winnerUnavailableConfidencelow
Pick on the Spread

Published pick: Unavailable

Pick on the Total

Published pick: Unavailable

#SeattleMariners#KansasCityRoyals

Share this preview

Facebook X Reddit Email
SportsJaw logo
Written by

SportsJaw Editorial Team

SportsJaw published this archived preview from its original game-day article. Its prediction and quoted lines are preserved as written.

About our editorial process

SportsJaw Mariners vs Royals archived game preview contains historical odds and availability that may no longer be current. View history of past Mariners vs Royals matchups or learn how our predictions work.

Current matchup data

Lines, trends and availability

Line movement since open

  • Moneyline · Seattle Mariners-135 → -127Moved
  • Moneyline · Kansas City Royals+124 → +114Moved
  • Spread · Seattle Mariners-1.5 (+120) → -1.5 (+125)Moved
  • Spread · Kansas City Royals+1.5 (-141) → +1.5 (-145)Moved
  • Total · Over8.5 (-110) → 8.5 (-110)Unchanged
  • Total · Under8.5 (-110) → 8.5 (-110)Unchanged

ATS and O/U trends

Seattle Mariners
76-86 matchup record · 5-5-0 ATS · 3-7-0 O/U
Last 10 completed games on file
Kansas City Royals
69-93 matchup record · 5-5-0 ATS · 6-4-0 O/U
Last 10 completed games on file

Injuries and availability

From the published research (2024-06-08T02:35:22.213Z). Availability may have changed; review the cited sources.

No verified injury or availability note was included in the published matchup research.

Recent head-to-head

  • 2024-06-07Seattle Mariners 9 · Kansas City Royals 10
  • 2024-05-15Kansas City Royals 2 · Seattle Mariners 4
  • 2024-05-14Kansas City Royals 4 · Seattle Mariners 2
  • 2024-05-13Kansas City Royals 2 · Seattle Mariners 6
Final result

Matchup pick recap

Kansas City Royals defeated Seattle Mariners 8-4

Kansas City Royals defeated Seattle Mariners 8-4 on June 8, 2024, a 4-run decision in the series. Kansas City Royals' strongest period was the 2nd inning, when it outscored its opponent 1-0. Against SportsJaw's recorded Seattle Mariners -1.5 (+125) spread, Kansas City Royals covered, while the 12 combined runs finished over the recorded total of 8.5.

SportsJaw editorial picks

  • Projected winnerNo published selectionUnavailable

Tipster picks

  • 1735203231Moneyline · Kansas City Royals +124Win
  • PeytoncMoneyline · Seattle Mariners -135Loss
  • CoversMoneyline · Seattle Mariners -138Loss
  • VfernandezTotal · Over 8.5 (-110)Win
  • CoolioMoneyline · Kansas City Royals +117Win
  • CoolioTotal · Over 8.5 (-110)Win
  • OddssharkMoneyline · Kansas City Royals +117Win
  • OddssharkTotal · Over 8.5 (-110)Win