First Pitch: 5:10 PM CT / 3:10 PM PT
Broadcast: Bally Sports Kansas City, ROOT Sports Northwest, MLB.TV
Venue & Weather
Kauffman Stadium is one of MLB’s largest outfields, suppressing home runs but rewarding gap power and speed.
Kansas City Weather Forecast:
- Temperature: 79–82°F
- Wind: 9–12 mph out to left field
- Humidity: 55–60%
- Rain: <10%
- Impact:
- Slight boost for right-handed fly-ball hitters
- Outfield gaps play big → extra-base hits likely
- Warm air helps carry the ball but park still leans pitcher-friendly
Injury Report
Seattle Mariners
- Julio Rodríguez — Day-to-day (back tightness)
- Ty France — OUT (wrist)
- Andrés Muñoz — Active
- J.P. Crawford — Active
- Matt Brash — OUT (elbow)
Kansas City Royals
- Bobby Witt Jr. — Active
- Vinnie Pasquantino — OUT (shoulder)
- Michael Wacha — OUT (forearm)
- Kyle Isbel — Day-to-day (ankle)
- Chris Stratton — Active
Team Records & Recent Form
Seattle Mariners (25–27)
- Last 10: 5–5
- Trend: Pitching strong, offense streaky
- Strength: Rotation consistency, bullpen leverage arms
- Weakness: Bottom-third offense, low OBP
Kansas City Royals (20–31)
- Last 10: 3–7
- Trend: Offense cooling, pitching struggling
- Strength: Speed, defense, Witt Jr. carrying lineup
- Weakness: Rotation depth, bullpen middle innings
Probable Pitching Matchup
Seattle — RHP George Kirby (4–4, 3.21 ERA)
- Profile:
- Elite command, low walk rate
- Four-seam/slider/splitter mix
- Works efficiently, deep into games
- Splits:
- Vs RHB: .218 AVG
- Vs LHB: .244 AVG
- Road ERA: 3.45
- Matchup Notes:
- Royals’ right-handed core (Witt, Garcia, Melendez) will be tested
- Kirby’s ability to avoid free passes is key in a big ballpark
Kansas City — RHP Tyler Kolek (1–5, 5.66 ERA)
- Profile:
- High-velocity fastball (96–98)
- Slider flashes but inconsistent
- Command issues lead to high pitch counts
- Splits:
- Vs RHB: .292 AVG
- Vs LHB: .268 AVG
- Home ERA: 6.02
- Matchup Notes:
- Mariners’ right-handed bats (Suárez, Raleigh, Canzone) match up well
- Kolek must avoid early damage; Seattle thrives vs wild pitchers
Key Player Matchups
1. Bobby Witt Jr. (KC) vs. George Kirby
- Witt handles velocity and elite command
- Kirby must keep the ball down to avoid extra-base damage Advantage: Even
2. Cal Raleigh (SEA) vs. Tyler Kolek
- Raleigh’s power from both sides is dangerous
- Kolek struggles vs left-handed power Advantage: Seattle
3. Salvador Perez (KC) vs. Kirby
- Perez still punishes mistakes
- Kirby rarely leaves pitches middle-middle Advantage: Seattle
4. Julio Rodríguez (SEA) vs. Kolek (if active)
- J-Rod’s bat speed vs Kolek’s velocity is a marquee matchup
- Kolek’s command lapses could lead to big swings Advantage: Seattle
Series History
- 2025 Season: Mariners won 4–2
- 2026 Season: Mariners lead 1–0 (Friday’s game)
- At Kauffman Stadium (last 12): Mariners lead 7–5
- Trend: Seattle has controlled the matchup for two seasons
Betting Trends
Seattle Mariners
- Under is 7–3 in last 10
- Mariners are 6–2 in last 8 vs Kansas City
- Kirby starts: Mariners are 5–3
Kansas City Royals
- Royals are 2–8 in last 10 home games
- Over is 6–2 in last 8 Royals games
- Kolek starts: Royals are 1–6
Game Odds
Seattle Mariners – 140
Kansas City Royals 8
Odds Courtesy of Sports Odds Direct as of Friday, May 22, 2026
