• The Blue Jays are -125 favorites vs the Mariners
• Blue Jays vs Mariners Over / Under today: 7 Runs
• Blue Jays / Mariners TV Channel: MRTV | RSN | KING

The Toronto Blue Jays (-125) visit T-Mobile Park to take on the Seattle Mariners (+105) on July 3, 2026. First pitch is scheduled for 10:10 pm in Seattle, WA.

This season, the Blue Jays are 41-46 against the spread (ATS), while the Mariners are 35-53 ATS.

Blue Jays vs Mariners Starting Pitchers Today:

• Blue Jays starting pitcher: Dylan Cease 4-4, 3.03 ERA
• Mariners starting pitcher: Luis Castillo 3-6, 4.96 ERA

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

Blue Jays vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Blue Jays will win Friday‘s MLB game with 52.0% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.

Bet now on Blue Jays vs Mariners and all games with BetMGM

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

Best Blue Jays Player Prop Bets Today:

• Nathan Lukes has hit the Home Runs Over in 2 of his last 6 away games (+15.50 Units / 258% ROI)
• Daulton Varsho has hit the Total Bases Over in 15 of his last 20 away games (+11.20 Units / 43% ROI)
• Nathan Lukes has hit the Hits Over in 12 of his last 15 away games (+9.60 Units / 37% ROI)
• Dylan Cease has hit the Strikeouts Over in his last 9 games (+9.00 Units / 74% ROI)
• Dylan Cease has hit the Walks Allowed Over in 17 of his last 25 games (+8.85 Units / 28% 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:

• Cal Raleigh has hit the Total Bases Under in 20 of his last 25 games (+14.65 Units / 43% ROI)
• Cal Raleigh has hit the Hits Runs and RBIs Under in 20 of his last 25 games (+14.05 Units / 45% ROI)
• Dominic Canzone has hit the Home Runs Over in 4 of his last 10 games at home (+12.10 Units / 121% ROI)
• Cal Raleigh has hit the Hits Under in 16 of his last 25 games (+11.25 Units / 45% ROI)
• Cal Raleigh has hit the Runs Under in 19 of his last 25 games (+10.20 Units / 30% ROI)

Blue Jays Best Bets Today:

• The Toronto Blue Jays have covered the Run Line in 13 of their last 18 away games (+7.60 Units / 28% ROI)
• The Toronto Blue Jays have hit the 1st Five Innings (F5) Team Total Under in 24 of their last 40 away games (+6.85 Units / 14% ROI)
• The Toronto Blue Jays have hit the Team Total Under in 24 of their last 40 away games (+6.25 Units / 13% ROI)
• The Toronto Blue Jays have hit the Moneyline in 9 of their last 14 away games (+6.00 Units / 41% ROI)
• The Toronto Blue Jays have hit the Game Total Over in 18 of their last 30 games (+4.85 Units / 15% ROI)

Mariners Best Bets Today:

• The Seattle Mariners have hit the Team Total Under in 21 of their last 30 games (+11.15 Units / 32% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 17 of their last 25 games at home (+8.75 Units / 28% ROI)
• The Seattle Mariners have hit the Moneyline in 12 of their last 16 games at home (+6.85 Units / 29% ROI)
• The Seattle Mariners have covered the Run Line in 6 of their last 11 games at home (+3.65 Units / 33% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 9 of their last 18 games at home (+3.50 Units / 12% ROI)

Blue Jays Against the Spread (ATS) Record

Against the spread this season, the Blue Jays are 42-44 against the Run Line (-5.05 Units / -4.46% ROI).

• 41-46 when betting on the Moneyline for -14.4 Units / -13.01% ROI
• 43-41 when betting on the total runs Over for -1.9 Units / -1.98% ROI
• 41-43 when betting on the total runs Under for -5.9 Units / -6.17% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 35-53 against the Run Line (-8.6 Units / -9.26% ROI).

• 45-43 when betting on the Moneyline for -11.3 Units / -9.33% ROI
• 42-43 when betting on the total runs Over for -5.1 Units / -5.26% ROI
• 43-42 when betting on the total runs Under for -2.95 Units / -3.05% ROI

Mariners vs Blue Jays Home Run Prop Bets Today

Mariners vs Blue Jays Total Hits Prop Bets Today

Mariners vs Blue Jays Strikeout Prop Bets Today

Blue Jays Keys to the Game vs. the Mariners

The Blue Jays are just 9-19 (.321) vs the top 10 runs allowed teams this season Today, they face Mariners (fifth in runs allowed).

The Blue Jays are just 5-31 (.139) when allowing 5 or more runs this season — 4th lowest in MLB; League Avg: .208.

The Blue Jays are just 8-23 (.258) when their opponents score in the first inning this season — 3rd lowest in MLB; League Avg: .368.

The Blue Jays are 6-35 (.146) when trailing entering the 8th inning this season — 5th best in MLB; League Avg: .101.

Mariners Keys to the Game vs. the Blue Jays

The Mariners are just 8-21 (.276) vs bottom 10 scoring offenses this season Today, they face the Blue Jays (24th in runs scored).

The Mariners are just 1-33 (.029) when trailing entering the 8th inning this season — tied for 4th lowest in MLB; League Avg: .101.

The Mariners are 9-5 (.643) when tied entering the 7th inning this season — 5th best in MLB; League Avg: .500.

The Mariners are 27-15 (.643) when tied entering the 7th inning since the 2025 season — 2nd best in MLB; League Avg: .500.

Blue Jays Hitting Stats & Trends

The Blue Jays are batting just .220 against LHP this season — 2nd lowest in MLB.

Blue Jays hitters have chased 46% of pitches out of the zone with two-strikes this season — highest in MLB.

Blue Jays hitters have struck out in just 20% of their PA’s against RHP this season — 2nd best in MLB.

Blue Jays hitters have chased 42% of pitches out of the zone in lefty-lefty matchups this season — highest in MLB.

Mariners Hitting Stats & Trends

Mariners hitters are slugging just .329 against LHP this season — lowest in MLB.

Mariners hitters have an OBP of just .293 (947 PA’s) against LHP this season — lowest in MLB.

Mariners hitters have an OPS of just .622 (947 PA’s) against LHP this season — lowest in MLB.

The Mariners are batting just .207 against LHP this season — lowest in MLB.

Blue Jays Pitching Stats & Trends

Blue Jays pitchers have allowed an average Exit Velocity of 87.9 MPH (2,116 batted balls) this season — 2nd best in MLB.

The Blue Jays pitchers have allowed an average Exit Velocity of just 87.9 MPH this season (2,116 balls in play) — 2nd best in MLB

The Blue Jays pitchers have allowed their opponents to score first in 57% of their games this season — 4th highest in MLB.

Blue Jays pitchers have 145 three-pitch strikeouts this season — tied for 4th most in MLB.

Mariners Pitching Stats & Trends

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

The Mariners pitchers have allowed their opponents to score first in just 39% of their games at home this season — lowest in MLB.

Mariners pitchers have thrown at least two strikes in their first three pitches to 69% of opposing batters this season — highest in MLB.

Mariners pitchers have walked 6% of batters when facing the leadoff batter in the inning this season — tied for 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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