• The Mariners are -160 favorites vs the Giants
• Giants vs Mariners Over / Under today: 7 Runs
• Giants / Mariners TV Channel: NSBA | MRTV | KING

The San Francisco Giants (+135) visit T-Mobile Park to take on the Seattle Mariners (-160) on July 17, 2026. First pitch is scheduled for 10:10 pm in Seattle, WA.

This season, the Giants are 41-55 against the spread (ATS), while the Mariners are 39-58 ATS.

Giants vs Mariners Starting Pitchers Today:

• Giants starting pitcher: Landen Roupp 6-8, 4.30 ERA
• Mariners starting pitcher: George Kirby 7-8, 3.78 ERA

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

Giants vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Friday‘s MLB game with 57.8% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.

Bet now on Giants vs Mariners and all games with BetMGM

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

Best Giants Player Prop Bets Today:

• Luis Arraez has hit the Home Runs Over in 2 of his last 10 away games (+18.00 Units / 180% ROI)
• Jung Hoo Lee has hit the Runs Over in 13 of his last 20 away games (+9.34 Units / 45% ROI)
• Jung Hoo Lee has hit the Singles Under in 15 of his last 25 games (+8.10 Units / 32% ROI)
• Jung Hoo Lee has hit the Hits Runs and RBIs Over in 17 of his last 25 away games (+7.20 Units / 24% ROI)
• Jung Hoo Lee has hit the Total Bases Under in his last 7 games (+7.00 Units / 64% 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:

• Luke Raley has hit the Runs Under in 22 of his last 25 games (+17.55 Units / 38% ROI)
• Dominic Canzone has hit the Home Runs Over in 4 of his last 8 games at home (+13.20 Units / 165% ROI)
• Cal Raleigh has hit the Total Bases Under in 13 of his last 15 games at home (+11.55 Units / 58% ROI)
• J.P. Crawford has hit the Hits Runs and RBIs Under in 19 of his last 25 games at home (+11.45 Units / 35% ROI)
• J.P. Crawford has hit the Singles Under in 18 of his last 25 games at home (+9.25 Units / 30% ROI)

Giants Best Bets Today:

• The San Francisco Giants have hit the Team Total Under in 33 of their last 50 away games (+14.20 Units / 25% ROI)
• The San Francisco Giants have hit the Game Total Over in 14 of their last 25 away games (+6.30 Units / 23% ROI)
• The San Francisco Giants have hit the 1st Five Innings (F5) Team Total Under in 22 of their last 35 games (+6.25 Units / 14% ROI)
• The San Francisco Giants have covered the Run Line in 20 of their last 35 games (+4.50 Units / 10% ROI)
• The San Francisco Giants have covered the 1st Five Innings (F5) Run Line in 10 of their last 16 away games (+2.70 Units / 14% ROI)

Mariners Best Bets Today:

• The Seattle Mariners have hit the Team Total Under in 24 of their last 35 games (+11.65 Units / 28% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 17 of their last 25 games (+8.30 Units / 27% ROI)
• The Seattle Mariners have hit the Moneyline in 14 of their last 19 games at home (+7.85 Units / 28% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 11 of their last 21 games at home (+4.50 Units / 14% ROI)
• The Seattle Mariners have covered the Run Line in 8 of their last 14 games at home (+4.45 Units / 30% ROI)

Giants Against the Spread (ATS) Record

Against the spread this season, the Giants are 44-51 against the Run Line (-19.3 Units / -14.6% ROI).

• 41-55 when betting on the Moneyline for -13.2 Units / -12.28% ROI
• 44-44 when betting on the total runs Over for -4.65 Units / -4.38% ROI
• 44-44 when betting on the total runs Under for -4.35 Units / -4.14% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 39-58 against the Run Line (-10.7 Units / -10.14% ROI).

• 48-49 when betting on the Moneyline for -14.75 Units / -11.21% ROI
• 47-46 when betting on the total runs Over for -3.4 Units / -3.18% ROI
• 46-47 when betting on the total runs Under for -5.45 Units / -5.12% ROI

Giants Keys to the Game vs. the Mariners

The Giants are just 1-40 (.024) when trailing entering the 7th inning this season — lowest in MLB; League Avg: .134.

The Giants are just 6-10 (.375) vs bottom 10 scoring offenses this season Today, they face the Mariners (28th in runs scored).

The Giants are just 36-8 (.818) when leading entering the 8th inning this season — 3rd lowest in MLB; League Avg: .902.

The Giants are just 31-9 (.775) when leading entering the 7th inning this season — 3rd lowest in MLB; League Avg: .866.

Mariners Keys to the Game vs. the Giants

The Mariners are just 12-25 (.324) vs bottom 10 scoring offenses this season Today, they face the Giants (24th in runs scored).

The Mariners are just 1-39 (.025) when trailing entering the 8th inning this season — 3rd lowest in MLB; League Avg: .098.

The Mariners are just 4-38 (.095) when trailing entering the 7th inning this season — 5th lowest in MLB; League Avg: .134.

The Mariners are just 1-43 (.023) when trailing entering the 9th inning this season — tied for 3rd lowest in MLB; League Avg: .053.

Giants Hitting Stats & Trends

The Giants are batting .265 on the road this season — 2nd best in MLB.

The Giants are batting .186 with two-strikes this season — 2nd best in MLB.

The Giants are batting .258 with two outs this season — 2nd best in MLB.

Giants hitters are slugging .420 this season — 5th best in MLB.

Mariners Hitting Stats & Trends

Mariners hitters are slugging just .334 against LHP this season — lowest in MLB.

Mariners hitters have 52 extra-base hits out of 187 total hits (just 28%) against LHP this season — lowest in MLB.

The Mariners are batting just .212 against LHP this season — lowest in MLB.

Mariners hitters have an OPS of just .631 (1,011 PA’s) against LHP this season — lowest in MLB.

Giants Pitching Stats & Trends

Opponents have a miss rate of just 23% against Giants pitchers this season — 5th lowest in MLB.

Opponents have a groundball rate of 45% against Giants pitchers this season — 3rd highest in MLB.

Giants pitchers have won only 16% of games in which they have allowed their opponent to score in three different innings this season — tied for lowest in MLB.

The Giants have won just 8% of road games in which their opponents scored first this season — lowest in MLB.

Mariners Pitching Stats & Trends

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

Mariners pitchers have a first-pitch strike rate of 66% this season — highest in MLB.

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

More MLB Reading:

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

Bet now on Giants vs Mariners and all games with BetMGM

Bet on MLB Odds at BetMGM

Sportsbook promos are always available at BetMGM. For new customers, check out the sportsbook welcome offer and BetMGM Refer a Friend. For existing customers, there are Odds Boosts, Parlay Boosts, contests and more.