- The Mariners are -170 favorites vs the Royals
- Royals vs Mariners Over / Under today: 7.5 Runs
- Royals / Mariners TV Channel: RTNW | FDKC
The Kansas City Royals (+140) visit T-Mobile Park to take on the Seattle Mariners (-170) on Monday, June 30, 2025. First pitch is scheduled for 9:40pm EDT in Seattle, WA.
This season, the Royals are 39-45 against the spread (ATS), while the Mariners are 36-46 ATS.
Royals vs Mariners Starting Pitchers Today:
- Royals starting pitcher: Michael Wacha 4-7, 3.34 ERA
- Mariners starting pitcher: George Kirby 1-4, 5.40 ERA
Royals vs. Mariners Odds, Run Line, Over/Under & Moneyline
| Spread | Over / Under | Moneyline | |
| Royals | +1.5 -160 | O 7.5 -120 | +140 |
| Mariners | -1.5 +135 | U 7.5 +100 | -170 |
Royals vs Mariners Prediction for Today’s Game
Based on recent trends the model predicts the Mariners will win Monday‘s MLB game with 58.8% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.
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We’ve highlighted some favorite MLB player prop bets for Royals players for Monday‘s game, looking at profitable historical betting trends:
Best Royals Player Prop Bets Today:
- Maikel Garcia has hit the Home Runs Over in 3 of his last 10 away games (+18.00 Units / 180% ROI)
- Jac Caglianone has hit the Runs Under in 18 of his last 20 games (+13.65 Units / 32% ROI)
- Jac Caglianone has hit the Total Bases Under in 12 of his last 15 games (+11.95 Units / 62% ROI)
- Jac Caglianone has hit the Hits Runs and RBIs Under in 16 of his last 20 games (+10.70 Units / 40% ROI)
- Jac Caglianone has hit the Hits Under in 10 of his last 15 games (+9.45 Units / 63% ROI)
And here are some favorite MLB player prop bets for Mariners players for Monday‘s game, looking at profitable historical betting trends:
Best Mariners Player Prop Best Bets Today:
- Donovan Solano has hit the Home Runs Over in 2 of his last 9 games (+11.90 Units / 132% ROI)
- Cal Raleigh has hit the Hits Over in 20 of his last 25 games at home (+10.65 Units / 24% ROI)
- J.P. Crawford has hit the Walks Under in his last 10 games (+10.00 Units / 54% ROI)
- George Kirby has hit the Strikeouts Under in 12 of his last 15 games (+9.20 Units / 52% ROI)
- Donovan Solano has hit the Singles Over in 11 of his last 15 games (+8.75 Units / 56% ROI)
Royals Best Bets Today:
- The Kansas City Royals have hit the Team Total Under in 59 of their last 84 games (+32.40 Units / 33% ROI)
- The Kansas City Royals have hit the Game Total Under in 48 of their last 76 games (+18.30 Units / 22% ROI)
- The Kansas City Royals have covered the Run Line in 23 of their last 28 away games (+17.25 Units / 40% ROI)
- The Kansas City Royals have hit the 1st Five Innings (F5) Team Total Under in 51 of their last 83 games (+15.95 Units / 16% ROI)
- The Kansas City Royals have covered the 1st Five Innings (F5) Run Line in 21 of their last 28 away games (+13.15 Units / 38% ROI)
Mariners Best Bets Today:
- The Seattle Mariners have hit the Game Total Over in 42 of their last 71 games (+12.45 Units / 16% ROI)
- The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Over in 43 of their last 77 games (+6.00 Units / 7% ROI)
- The Seattle Mariners have hit the Team Total Over in 11 of their last 16 games (+4.75 Units / 24% ROI)
- The Seattle Mariners have hit the Moneyline in 10 of their last 16 games (+3.25 Units / 17% ROI)
- The Seattle Mariners have covered the Run Line in 15 of their last 30 games at home (+1.55 Units / 4% ROI)
Royals Against the Spread (ATS) Record
Against the spread this season, the Royals are 43-41 against the Run Line (-8.9 Units / -7.44% ROI).
- 39-45 when betting on the Moneyline for -7.15 Units / -7.01% ROI
- 32-51 when betting on the total runs Over for -23.47 Units / -25.57% ROI
- 51-32 when betting on the total runs Under for +15.8 Units / 16.98% ROI
Mariners Against the Spread (ATS) Record
Against the spread this season, the Mariners are 36-46 against the Run Line (-11.6 Units / -11.25% ROI).
- 43-40 when betting on the Moneyline for -6.85 Units / -6.3% ROI
- 45-34 when betting on the total runs Over for +7.75 Units / 8.54% ROI
- 34-45 when betting on the total runs Under for -15.72 Units / -17.1% ROI
Mariners vs Royals Home Run Prop Bets Today
| Over | Under | |
|---|---|---|
| Cal Raleigh (SEA) | 0.5 +230 | 0.5 -285 |
| Bobby Witt Jr. (KC) | 0.5 +425 | 0.5 -625 |
| Dominic Canzone (SEA) | 0.5 +425 | 0.5 -625 |
| Jorge Polanco (SEA) | 0.5 +450 | 0.5 -625 |
| Randy Arozarena (SEA) | 0.5 +475 | 0.5 -700 |
Mariners vs Royals Total Hits Prop Bets Today
| Over | Under | |
|---|---|---|
| Maikel Garcia (KC) | 0.5 -235 | 0.5 +175 |
| Vinnie Pasquantino (KC) | 0.5 -225 | 0.5 +170 |
| J.P. Crawford (SEA) | 0.5 -200 | 0.5 +155 |
| Jonathan India (KC) | 0.5 -200 | 0.5 +155 |
| Cal Raleigh (SEA) | 0.5 -200 | 0.5 +150 |
Mariners vs Royals RBI Prop Bets Today
| Over | Under | |
|---|---|---|
| Cal Raleigh (SEA) | 0.5 +120 | 0.5 -160 |
| Vinnie Pasquantino (KC) | 0.5 +140 | 0.5 -185 |
| Jorge Polanco (SEA) | 0.5 +170 | 0.5 -220 |
| Bobby Witt Jr. (KC) | 0.5 +185 | 0.5 -250 |
| Salvador Perez (KC) | 0.5 +190 | 0.5 -250 |
Mariners vs Royals Strikeout Prop Bets Today
| Over | Under | |
|---|---|---|
| Michael Wacha (KC) | 4.5 -165 | 4.5 +125 |
| George Kirby (SEA) | 4.5 -140 | 4.5 +105 |
Royals Starting Pitcher Stats & Trends
Opponents are hitting .400 (12-for-30) against Michael Wacha’s low fastballs this season — tied for 3rd highest among qualified SPs in MLB; League Avg: .265 — seventh Percentile.
Opponents have a Hard-Hit Rate of just 21% (19/90) against Michael Wacha with two-strikes this season — best among qualified SPs in MLB; League Avg: 37% — 100th Percentile.
Michael Wacha threw his breaking pitches for a strike just 47% (212/452) of the time in the 2024 season — lowest in MLB among starting pitchers with at least 64 total IP; League Avg: 62% — 0 Percentile.
Michael Wacha has thrown 58% of his pitches in the strike zone (110/190) over the last 14 days — 3rd best among AL Starters over the last two weeks; League Avg: 51% — 95th Percentile.
Mariners Starting Pitcher Stats & Trends
George Kirby walked 3% of batters in the 2024 season — best among qualified SPs in MLB; League Avg: 7% — 100th Percentile.
George Kirby has walked 4% of batters when going through the lineup the first time in a game since the 2023 season — 2nd best among qualified SPs in MLB; League Avg: 7% — 96th Percentile.
George Kirby has walked 2% of right-handed batters in the 2024 season — best among qualified SPs in MLB; League Avg: 6% — 100th Percentile.
George Kirby has walked 3% of batters since last season — tied for best in MLB among starting pitchers with at least 97 total IP; League Avg: 8% — 100th Percentile.
Royals Keys to the Game vs. the Mariners
The Royals were just 4-50 (.074) when they allowed 5 or more runs in the 2024 season — 2nd lowest in MLB; League Avg: .196.
The Royals are 9-1 (.900) when they’ve hit 2 or more home runs this season — best in MLB; League Avg: .715.
The Royals are 16-2 (.889) when scoring 5 or more runs this season — 5th best in MLB; League Avg: .799.
The Royals are 35-0 (1.000) when leading entering the 9th inning this season — tied for best in MLB; League Avg: .955.
Mariners Keys to the Game vs. the Royals
The Mariners are 4-33 (.108) when trailing entering the 9th inning this season — 2nd best in MLB; League Avg: .044.
The Mariners are 31-1 (.969) when leading entering the 8th inning this season — 4th best in MLB; League Avg: .905.
The Mariners are 106-2 (.981) when leading entering the 9th inning since last season — 3rd best in MLB; League Avg: .951.
The Mariners were 33-7 (.825) when they had 10 or more hits in the 2024 season — tied for 5th best in MLB; League Avg: .750.
Royals Hitting Stats & Trends
Royals hitters have struck out in just 19% of their PA’s this season — tied for 2nd best in MLB; League Avg: 22%.
Royals hitters have drawn walks in 7% of their PA’s this season — lowest in MLB; League Avg: 9%.
Royals hitters have drawn walks in 6% of their PA’s against LHP since last season — lowest in MLB; League Avg: 8%.
Royals hitters have an OBP of just .292 (1,564 PA’s) at home this season — lowest in MLB; League Avg: .322.
Mariners Hitting Stats & Trends
The Mariners batted just .207 when facing the starting pitcher for the 3rd time in a game in the 2024 season — lowest in MLB; League Avg: .263.
The Mariners are batting just .219 when facing the starting pitcher for the 3rd time in a game since last season — lowest in MLB; League Avg: .260.
The Mariners are batting just .230 when facing the starting pitcher for the 3rd time in a game since the 2023 season — lowest in MLB; League Avg: .263.
Mariners hitters are slugging .717 on the first pitch of at-bats this season — 2nd best in MLB; League Avg: .578.
Royals Pitching Stats & Trends
Royals pitchers have an ERA of 3.48 (1045.1 IP) on the road since last season — best in MLB; League Avg: 4.19.
The Royals have won just 0% of home games in which their opponents scored first this month (13 games) — tied for lowest in MLB; League Avg: 34%.
Royals pitchers have an ERA of 3.09 (699.0 IP) against division opponents since last season — 2nd best in MLB; League Avg: 4.08.
The Royals have allowed 3.69 runs per game (310/84) this season — 3rd best in MLB; League Avg: 4.37.
Mariners Pitching Stats & Trends
Mariners pitchers walked 76 of 1,441 batters (5%) when facing the leadoff batter in the inning in the 2024 season — best in MLB; League Avg: 7%.
Mariners pitchers allowed an OBP of just .251 (1,441 PA’s) when facing the leadoff batter in the inning in the 2024 season — best in MLB; League Avg: .305.
Mariners pitchers have walked 7% of batters since last season — best in MLB; League Avg: 8%.
Mariners pitchers walked 369 of 5,801 batters (6%) in the 2024 season — best in MLB; League Avg: 8%.
More MLB Reading:
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