MLB Game Preview: Kansas City Royals (39-45) vs. Seattle Mariners (43-40)

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Seattle Mariners

Game Details

  • Matchup: Kansas City Royals vs. Seattle Mariners
  • Date: Monday, June 30, 2025
  • Time: 9:40 PM ET
  • Venue: T-Mobile Park, Seattle, WA
  • Broadcast: ROOT Sports NW, Bally Sports KC, MLB.tv

Starting Pitchers

TeamPitcherRecordERAWHIPK/9
RoyalsMichael Wacha (RHP)5-63.891.247.8
MarinersLogan Gilbert (RHP)6-53.421.119.1
  • Michael Wacha brings veteran poise and a solid 3.89 ERA into a tough road environment.
  • Logan Gilbert has been sharp at home, with a 2.95 ERA at T-Mobile Park and a 4:1 K/BB ratio.

Team Performance Snapshot

TeamRecordLast 10Home/AwayRun Differential
Royals39-453-719-21 (Road)-22
Mariners43-406-420-19 (Home)+18
  • Seattle owns the AL’s 4th-best on-base percentage (.324).
  • Kansas City is 25-9 when they don’t allow a home run.

Players to Watch

Seattle Mariners

  • Cal Raleigh: MLB leader with 32 HR and 69 RBI – slugging .643.
  • Julio Rodríguez: .259 AVG, 11 HR – riding a 3-game hit streak.
  • J.P. Crawford: Team-best .277 AVG – consistent top-of-the-order presence.

Kansas City Royals

  • Bobby Witt Jr.: .285 AVG, 11 HR, 29 doubles – 13-for-42 (.310) over last 10 games.
  • Vinnie Pasquantino: 12 HR, .417 SLG – Royals’ top power bat.
  • Maikel Garcia: .314 AVG – leads team in batting average.

Game Odds

Kansas City Royals           7.5

Seattle Mariners              – 164

Odds Courtesy of Sports Odds Direct as of Sunday, June 29, 2025