• The Mariners are -155 favorites vs the Royals
• Royals vs Mariners Over / Under today: 7 Runs
• Royals / Mariners TV Channel: ATV

The Kansas City Royals (+130) visit T-Mobile Park to take on the Seattle Mariners (-155) on May 1, 2026. First pitch is scheduled for 9:45 pm in Seattle, WA.

This season, the Royals are 12-19 against the spread (ATS), while the Mariners are 12-20 ATS.

Royals vs Mariners Starting Pitchers Today:

• Royals starting pitcher: Cole Ragans 1-4, 5.07 ERA
• Mariners starting pitcher: Bryan Woo 1-2, 3.82 ERA

Royals vs. Mariners Odds, Run Line, Over/Under & Moneyline

Royals vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Friday‘s MLB game with 56.3% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.

Bet now on Royals vs Mariners and all games with BetMGM

We’ve highlighted some favorite MLB player prop bets for Royals players for Friday‘s game, looking at profitable historical betting trends:

Best Royals Player Prop Bets Today:

• Bobby Witt Jr. has hit the Runs Under in 19 of his last 25 games (+12.45 Units / 40% ROI)
• Carter Jensen has hit the Home Runs Over in 3 of his last 10 away games (+11.90 Units / 119% ROI)
• Lane Thomas has hit the Hits Runs and RBIs Under in 16 of his last 20 away games (+11.40 Units / 42% ROI)
• Salvador Perez has hit the Hits Under in 12 of his last 20 away games (+9.10 Units / 40% ROI)
• Isaac Collins has hit the Total Bases Under in 9 of his last 10 away games (+8.70 Units / 81% ROI)

And here are some favorite MLB player prop bets for Mariners players for Friday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Best Bets Today:

• J.P. Crawford has hit the Home Runs Over in 2 of his last 10 games (+13.00 Units / 130% ROI)
• Cole Young has hit the Singles Over in 11 of his last 15 games at home (+12.80 Units / 85% ROI)
• Julio Rodriguez has hit the Hits Over in his last 10 games at home (+10.90 Units / 53% ROI)
• Cole Young has hit the Walks Under in his last 10 games (+10.00 Units / 45% ROI)
• Josh Naylor has hit the Runs Under in 19 of his last 25 games (+9.05 Units / 21% ROI)

Royals Best Bets Today:

• The Kansas City Royals have hit the 1st Five Innings (F5) Team Total Under in 13 of their last 15 away games (+11.15 Units / 64% ROI)
• The Kansas City Royals have hit the Game Total Under in 14 of their last 18 away games (+9.55 Units / 48% ROI)
• The Kansas City Royals have hit the Team Total Under in 13 of their last 18 away games (+7.45 Units / 37% ROI)
• The Kansas City Royals have hit the Moneyline in 4 of their last 6 games (+2.00 Units / 30% ROI)
• The Kansas City Royals have covered the Run Line in 4 of their last 6 games (+1.65 Units / 20% ROI)

Mariners Best Bets Today:

• The Seattle Mariners have hit the Moneyline in 34 of their last 50 games at home (+11.90 Units / 14% ROI)
• The Seattle Mariners have hit the Team Total Over in 31 of their last 50 games at home (+10.50 Units / 18% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 29 of their last 50 games at home (+10.30 Units / 12% ROI)
• The Seattle Mariners have hit the Game Total Over in 29 of their last 50 games at home (+7.25 Units / 13% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 7 of their last 8 games (+5.75 Units / 55% ROI)

Royals Against the Spread (ATS) Record

Against the spread this season, the Royals are 13-17 against the Run Line (-8.1 Units / -19.01% ROI).

• 12-19 when betting on the Moneyline for -9.9 Units / -26.23% ROI
• 13-18 when betting on the total runs Over for -6.65 Units / -19.44% ROI
• 18-13 when betting on the total runs Under for +3.95 Units / 11.62% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 12-20 against the Run Line (-5.75 Units / -16.84% ROI).

• 16-16 when betting on the Moneyline for -5.5 Units / -12.14% ROI
• 15-16 when betting on the total runs Over for -2.5 Units / -7.09% ROI
• 16-15 when betting on the total runs Under for -0.35 Units / -0.99% ROI

Mariners vs Royals Home Run Prop Bets Today

Mariners vs Royals Total Hits Prop Bets Today

Mariners vs Royals Strikeout Prop Bets Today

Royals Keys to the Game vs. the Mariners

The Royals are just 10-4 (.714) when leading entering the 8th inning this season — lowest in MLB; League Avg: .888.

The Royals are just 3-12 (.200) on the road this season — lowest in MLB; League Avg: .464.

The Royals are just 6-12 (.333) after a loss this season — tied for 3rd lowest in MLB; League Avg: .477.

The Royals are just 12-19 (.387) this season — tied for 4th lowest in MLB; League Avg: .500.

Mariners Keys to the Game vs. the Royals

The Mariners are just 2-6 (.250) vs bottom 10 scoring offenses this season Today, they face the Royals (23rd in runs scored).

The Mariners are 6-74 (.075) when trailing entering the 9th inning since the 2025 season — 3rd best in MLB; League Avg: .046.

The Mariners are 10-69 (.127) when trailing entering the 8th inning since the 2025 season — 3rd best in MLB; League Avg: .094.

The Mariners are 14-67 (.173) when trailing entering the 7th inning since the 2025 season — 4th best in MLB; League Avg: .128.

Royals Hitting Stats & Trends

33% of Royals hitters strikeouts have come on 95+ MPH fastballs this season — 2nd highest in MLB.

The Royals are batting just .202 on the road this season — lowest in MLB.

Royals hitters have put 40% of their swings in play on the first pitch of at-bats since the 2025 season — tied for highest in MLB.

Royals hitters are slugging .794 with the pitcher behind in the count this season — best in MLB.

Mariners Hitting Stats & Trends

Mariners hitters are slugging .676 on the first pitch of at-bats since the 2025 season — 2nd best in MLB.

Mariners hitters have an OBP of .373 (118 PA’s) when facing the starting pitcher for the 3rd time in a game this season — tied for 2nd best in MLB.

Mariners hitters have an OPS of just .621 (333 PA’s) against LHP this season — 3rd lowest in MLB.

Mariners hitters have an OPS of just .640 (569 PA’s) on the road this season — 5th lowest in MLB.

Royals Pitching Stats & Trends

Royals pitchers have walked 12% of batters this season — 3rd highest in MLB.

Opponents have a groundball rate of just 38% against Royals pitchers this season — 2nd lowest in MLB.

Opponents have a groundball batting average of just .229 against Royals pitchers with runners on base since the 2025 season — 2nd best in MLB.

Royals pitchers have a strikeout rate of just 18% in close and late situations this season — 3rd lowest in MLB.

Mariners Pitching Stats & Trends

Mariners pitchers have a first-pitch strike rate of 68% this season — highest in MLB.

Mariners pitchers have induced opposing hitters to ground into 33 double plays in 229 opportunities (14%) this season — best in MLB.

Mariners pitchers have walked 7% of batters since the 2025 season — tied for 2nd best in MLB.

Mariners pitchers have walked 7% of batters this season — best in MLB.

More MLB Reading:

• Home Run Predictions Today
• Best NRFI Bets Today
• Strikeout Props Today
• MLB Starting Pitchers Today

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