Mariners vs Giants Prediction, Odds & Player Prop Bets Today – MLB, Apr 4

Colorado Rockies left fielder Nolan Jones (22) in sixth inning of a baseball game Wednesday, Sept. 25, 2024, in Denver.
(AP Photo/Matt York)
  • The Giants are -160 favorites vs the Mariners
  • Mariners vs Giants Over / Under today: 7.5 Runs
  • Mariners / Giants TV Channel: NSBA | RTNW

The Seattle Mariners (+135) visit Oracle Park to take on the San Francisco Giants (-160) on Friday, April 4, 2025. First pitch is scheduled for 4:35pm EDT in San Francisco, CA.

This season, the Mariners are 3-4 against the spread (ATS), while the Giants are 6-0 ATS.

Mariners vs Giants Starting Pitchers Today:

  • Mariners starting pitcher: Luis Castillo 1-1, 3.00 ERA
  • Giants starting pitcher: Justin Verlander 0-0, 3.60 ERA

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

SpreadOver / UnderMoneyline
Mariners+1.5 -180O 7.5 -105+135
Giants -1.5 +145U 7.5 -115-160

Mariners vs Giants Prediction for Today’s Game

Based on recent trends the model predicts the Giants will win Friday‘s MLB game with 52.3% 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 Mariners players for Friday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Bets Today:

  • Julio Rodriguez has hit the Home Runs Over in 4 of his last 10 away games (+11.50 Units / 115% ROI)
  • Julio Rodriguez has hit the Singles Over in 18 of his last 25 away games (+9.35 Units / 29% ROI)
  • Bryce Miller has hit the Earned Runs Under in 17 of his last 25 games (+8.55 Units / 28% ROI)
  • Randy Arozarena has hit the Total Bases Over in 9 of his last 10 away games (+7.90 Units / 50% ROI)
  • Julio Rodriguez has hit the Hits Runs and RBIs Over in 12 of his last 15 away games (+7.85 Units / 39% ROI)

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

Best Giants Player Prop Best Bets Today:

  • Wilmer Flores has hit the Home Runs Over in 4 of his last 6 games (+23.80 Units / 397% ROI)
  • Heliot Ramos has hit the Total Bases Under in 19 of his last 25 games at home (+9.20 Units / 24% ROI)
  • Heliot Ramos has hit the Hits Runs and RBIs Over in his last 6 games (+6.00 Units / 82% ROI)
  • Jung Hoo Lee has hit the Runs Under in 14 of his last 20 games (+5.50 Units / 19% ROI)
  • LaMonte Wade Jr has hit the Hits Under in his last 4 games (+5.20 Units / 130% ROI)
  • The Seattle Mariners have hit the Game Total Over in 41 of their last 65 away games (+20.15 Units / 28% ROI)
  • The Seattle Mariners have covered the Run Line in 15 of their last 23 games (+8.95 Units / 31% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 21 of their last 37 away games (+8.70 Units / 17% ROI)
  • The Seattle Mariners have hit the Moneyline in 16 of their last 23 games (+7.65 Units / 25% ROI)
  • The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 31 of their last 53 away games (+6.40 Units / 10% ROI)
  • The San Francisco Giants have hit the Team Total Under in 20 of their last 27 games at home (+12.35 Units / 40% ROI)
  • The San Francisco Giants have hit the Game Total Over in 65 of their last 121 games (+8.95 Units / 7% ROI)
  • The San Francisco Giants have hit the 1st Five Innings (F5) Moneyline in 36 of their last 75 games (+8.02 Units / 8% ROI)
  • The San Francisco Giants have hit the 1st Five Innings (F5) Team Total Over in 72 of their last 130 games (+6.08 Units / 4% ROI)
  • The San Francisco Giants have hit the Moneyline in 8 of their last 12 games (+5.70 Units / 43% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 2-5 against the Run Line (-2.65 Units / -34.19% ROI).

  • 3-4 when betting on the Moneyline for -3 Units / -28.44% ROI
  • 1-5 when betting on the total runs Over for -4.55 Units / -57.96% ROI
  • 5-1 when betting on the total runs Under for +4.05 Units / 53.29% ROI

Giants Against the Spread (ATS) Record

Against the spread this season, the Giants are 6-0 against the Run Line (+7.15 Units / 84.12% ROI).

  • 5-1 when betting on the Moneyline for +4.45 Units / 65.93% ROI
  • 4-2 when betting on the total runs Over for +1.8 Units / 27.48% ROI
  • 2-4 when betting on the total runs Under for -2.45 Units / -36.84% ROI

Giants vs Mariners Home Run Prop Bets Today

Over Under
Willy Adames (SF) 0.5 +475 0.5 -700
Matt Chapman (SF) 0.5 +475 0.5 -650
Cal Raleigh (SEA) 0.5 +500 0.5 -700
Julio Rodriguez (SEA) 0.5 +525 0.5 -750
Randy Arozarena (SEA) 0.5 +575 0.5 -900

Giants vs Mariners Total Hits Prop Bets Today

Over Under
Willy Adames (SF) 0.5 -250 0.5 +185
Jung-hoo Lee (SF) 0.5 -250 0.5 +190
Heliot Ramos (SF) 0.5 -250 0.5 +190
Julio Rodriguez (SEA) 0.5 -235 0.5 +175
Victor Robles (SEA) 0.5 -225 0.5 +170

Giants vs Mariners RBI Prop Bets Today

Over Under
Matt Chapman (SF) 0.5 +125 0.5 -160
Heliot Ramos (SF) 0.5 +150 0.5 -200
Cal Raleigh (SEA) 0.5 +155 0.5 -210
Julio Rodriguez (SEA) 0.5 +165 0.5 -220
Jung-hoo Lee (SF) 0.5 +170 0.5 -225

Giants vs Mariners Strikeout Prop Bets Today

Over Under
Luis F. Castillo (SEA) 2.5 -155 2.5 +120
Justin Verlander (SF) 5.5 -105 5.5 -125

No Matchup notes for this Game

Giants Starting Pitcher Stats & Trends

Opponents had a groundball batting average of .398 (33 GB hits out of 83 GBs) against Justin Verlander in the 2024 season — highest in MLB among starting pitchers with at least 64 total IP; League Avg: .245 — 0 Percentile.

Opponents batted just .203 (13-for-64) against Justin Verlander on the first pitch of at-bats in 2023 — best in MLB among starting pitchers with at least 64 total IP; League Avg: .350 — 100th Percentile.

Opponents are hitting just .045 (1-for-22) against Justin Verlander in close and late situations since the 2023 season — best in MLB among starting pitchers with at least 131 total IP; League Avg: .231 — 100th Percentile.

Opponents have a line drive rate of 33% (48/144) against Justin Verlander on non-fastballs since last season — highest in MLB among starting pitchers with at least 66 total IP; League Avg: 23% — 0 Percentile.

Mariners Keys to the Game vs. the Giants

The Mariners are 123-19 (.866) when scoring 5 or more runs since last season — 2nd best in MLB; League Avg: .792.

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.

The Mariners are 77-14 (.846) when they’ve had 10 or more hits since last season — best in MLB; League Avg: .740.

The Mariners were 58-5 (.921) when they scored 5 or more runs in the 2024 season — best in MLB; League Avg: .804.

Giants Keys to the Game vs. the Mariners

The Giants are 11-144 (.071) when trailing entering the 9th inning since last season — 5th best in MLB; League Avg: .050.

The Giants were just 20-24 (.455) vs bottom 10 scoring offenses in the 2024 season They play the Mariners (21st best runs scored) today.

The Giants are 136-4 (.971) when leading entering the 9th inning since last season — 4th best in MLB; League Avg: .950.

The Giants are 23-139 (.142) when trailing entering the 8th inning since last season — 4th best in MLB; League Avg: .099.

The Mariners are batting just .205 when facing the starting pitcher for the 3rd time in a game since last season — lowest in MLB; League Avg: .261.

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 .211 at home since last season — lowest in MLB; League Avg: .245.

Mariners hitters have put just 33% of their swings in play with two-strikes since the 2023 season — lowest in MLB; League Avg: 37%.

Giants hitters had an OPS of just .683 (1,790 PA’s) against LHP in 2023 — 3rd lowest in MLB; League Avg: .742.

Giants hitters slugged just .376 against LHP in 2023 — 3rd lowest in MLB; League Avg: .419.

Giants hitters had an OBP of just .307 (1,790 PA’s) against LHP in 2023 — 5th lowest in MLB; League Avg: .323.

The Giants batted just .151 with two-strikes in 2023 — 2nd lowest in MLB; League Avg: .172.

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 allowed an OBP of just .251 (1,504 PA’s) when facing the leadoff batter in the inning since last season — best in MLB; League Avg: .305.

Mariners pitchers allowed an OBP of just .276 (5,788 PA’s) in the 2024 season — best in MLB; League Avg: .312.

Opponents have a groundball rate of 49% against Giants pitchers since the 2023 season — highest in MLB; League Avg: 43%.

Opponents had a groundball rate of 50% against Giants pitchers in 2023 — highest in MLB; League Avg: 43%.

Opponents have a groundball rate of 49% against Giants pitchers since last season — highest in MLB; League Avg: 43%.

Opponents had a groundball rate of 49% against Giants pitchers in the 2024 season — highest in MLB; League Avg: 43%.

More MLB Reading:


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Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.

Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.