Astros vs Giants Prediction, Odds & Player Prop Bets Today – MLB, Aug 12

San Francisco Giants designated hitter Rafael Devers rounds the bases after hitting a solo home run during the fourth inning of a baseball game against the Colorado Rockies, Sunday, Sept. 28, 2025, in San Francisco. (AP Photo/Thien-An Truong)
(AP Photo/Thien-An Truong)
Sportsbook Promos
  • The Astros are -155 favorites vs the Giants
  • Astros vs Giants Over / Under today: 8.5 Runs
  • Astros / Giants TV Channel: NSBA | SCHN

The Houston Astros (-155) visit Oracle Park to take on the San Francisco Giants (+125) on August 12, 2026. First pitch is scheduled for 3:45 pm in San Francisco, CA.

This season, the Astros are 61-60 against the spread (ATS), while the Giants are 57-61 ATS.

Astros vs Giants Starting Pitchers Today:

  • Astros starting pitcher: Ronel Blanco 0-1, 6.99 ERA
  • Giants starting pitcher: Tyler Mahle 3-9, 4.86 ERA

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

SpreadOver / UnderMoneyline
Astros-1.5 +110O 8.5 -115-155
Giants +1.5 -135U 8.5 -105+125

Astros vs Giants Prediction for Today’s Game

Based on recent trends the model predicts the Astros will win Wednesday‘s MLB game with 57.6% 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 Astros players for Wednesday‘s game, looking at profitable historical betting trends:

Best Astros Player Prop Bets Today:

  • Cam Smith has hit the Home Runs Over in 4 of his last 10 away games (+20.00 Units / 200% ROI)
  • Taylor Trammell has hit the Runs Over in 13 of his last 25 away games (+10.80 Units / 43% ROI)
  • Jeremy Pena has hit the Hits Under in his last 8 games (+10.55 Units / 74% ROI)
  • Yordan Alvarez has hit the Total Bases Under in 18 of his last 25 away games (+10.40 Units / 36% ROI)
  • Yordan Alvarez has hit the RBIs Under in 19 of his last 25 away games (+8.85 Units / 21% ROI)

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

Best Giants Player Prop Best Bets Today:

  • Osleivis Basabe has hit the Home Runs Over in 3 of his last 10 games (+22.00 Units / 220% ROI)
  • Bryce Eldridge has hit the Walks Over in 15 of his last 25 games at home (+10.10 Units / 40% ROI)
  • Bryce Eldridge has hit the Singles Under in 12 of his last 15 games at home (+7.50 Units / 32% ROI)
  • Willy Adames has hit the Hits Over in 9 of his last 10 games at home (+7.30 Units / 47% ROI)
  • Willy Adames has hit the Total Bases Over in 9 of his last 10 games at home (+7.30 Units / 47% ROI)
  • The Houston Astros have covered the Run Line in 14 of their last 20 games (+10.90 Units / 44% ROI)
  • The Houston Astros have hit the Moneyline in 27 of their last 45 away games (+10.05 Units / 21% ROI)
  • The Houston Astros have hit the 1st Five Innings (F5) Team Total Under in 20 of their last 30 away games (+7.65 Units / 20% ROI)
  • The Houston Astros have hit the Team Total Over in 21 of their last 35 away games (+6.60 Units / 17% ROI)
  • The Houston Astros have hit the Game Total Over in 12 of their last 19 away games (+6.50 Units / 31% ROI)
  • The San Francisco Giants have hit the 1st Five Innings (F5) Moneyline in 8 of their last 15 games at home (+6.70 Units / 36% ROI)
  • The San Francisco Giants have hit the Team Total Under in 27 of their last 45 games (+6.65 Units / 13% ROI)
  • The San Francisco Giants have covered the 1st Five Innings (F5) Run Line in 9 of their last 11 games at home (+6.35 Units / 45% ROI)
  • The San Francisco Giants have hit the Moneyline in 15 of their last 25 games at home (+5.70 Units / 19% ROI)
  • The San Francisco Giants have covered the Run Line in 15 of their last 25 games at home (+4.85 Units / 15% ROI)

Astros Against the Spread (ATS) Record

Against the spread this season, the Astros are 62-59 against the Run Line (-2.1 Units / -1.29% ROI).

  • 61-60 when betting on the Moneyline for -4.9 Units / -3.46% ROI
  • 64-50 when betting on the total runs Over for +8.05 Units / 5.99% ROI
  • 50-64 when betting on the total runs Under for -20.35 Units / -15.42% ROI

Giants Against the Spread (ATS) Record

Against the spread this season, the Giants are 57-61 against the Run Line (-19.05 Units / -11.43% ROI).

  • 50-70 when betting on the Moneyline for -17.55 Units / -13.2% ROI
  • 54-55 when betting on the total runs Over for -6.75 Units / -5.09% ROI
  • 55-54 when betting on the total runs Under for -4.2 Units / -3.2% ROI

Giants vs Astros Home Run Prop Bets Today

Yes
Rafael Devers +333
Yordan Alvarez +333
Willy Adames +390
Bryce Eldridge +500
Victor Bericoto +500

Giants vs Astros Total Hits Prop Bets Today

Over Under
Isaac Paredes 0.5 -250 0.5 +185
Christian Walker 0.5 -210 0.5 +155
Daulton Varsho 0.5 -210 0.5 +155
Yainer Diaz 0.5 -210 0.5 +155
Cam Smith 0.5 -200 0.5 +150

Giants vs Astros Strikeout Prop Bets Today

Over Under
Rafael Devers 0.5 -235 0.5 +175
Taylor Trammell 0.5 -225 0.5 +165
Drew Cavanaugh 0.5 -210 0.5 +155
Osleivis Basabe 0.5 -200 0.5 +145
Christian Walker 0.5 -175 0.5 +130

Astros Keys to the Game vs. the Giants

The Astros were just 0-56 (.000) when trailing entering the 9th inning in the 2024 season — tied for lowest in MLB; League Avg: .050.

The Astros were 56-7 (.889) when they scored 5 or more runs in the 2025 season — 3rd best in MLB; League Avg: .797.

The Astros were 65-10 (.867) when they scored 5 or more runs in the 2024 season — 5th best in MLB; League Avg: .804.

The Astros were just 5-13 (.278) when tied entering the 8th inning in the 2024 season — 3rd lowest in MLB; League Avg: .500.

Giants Keys to the Game vs. the Astros

The Giants were just 65-6 (.915) when leading entering the 9th inning in the 2025 season — 3rd lowest in MLB; League Avg: .956.

The Giants were 11-65 (.145) when trailing entering the 8th inning in the 2025 season — 2nd best in MLB; League Avg: .090.

The Giants were 12-60 (.167) when trailing entering the 7th inning in the 2025 season — tied for 4th best in MLB; League Avg: .124.

Astros hitters have 38 extra-base hits out of 140 total hits (just 27%) when facing the starting pitcher for the 3rd time in a game this season — 2nd lowest in MLB.

The Astros are batting .273 when facing the starting pitcher for the 3rd time in a game this season — 5th best in MLB.

Astros hitters have struck out in just 20% of their PA’s against LHP this season — 5th best in MLB.

Astros hitters have 77 extra-base hits out of 175 total hits (44%) on the first pitch of at-bats this season — 2nd best in MLB.

The Giants are batting .254 with two outs this season — 2nd best in MLB.

Giants hitters have struck out in just 20% of their PA’s against RHP this season — 4th best in MLB.

30% of Giants hitters strikeouts have come on 95+ MPH fastballs this season — highest in MLB.

The Giants have a winning percentage of just 42% this season — 5th lowest in MLB.

Astros pitchers have walked 11% of batters when facing the leadoff batter in the inning this season — highest in MLB.

Astros pitchers have walked 11% of batters this season — 2nd highest in MLB.

Opponents have a groundball rate of just 39% against Astros pitchers this season — 2nd lowest in MLB.

The Astros have allowed 3.14 runs per game (380/121) in the first 5 innings this season — 3rd highest in MLB.

The Giants have won just 6% of road games in which their opponents scored first this season — lowest in MLB.

Giants pitchers have walked 10% of batters this season — tied for 5th highest in MLB.

Opponents have a groundball rate of 46% against Giants pitchers this season — highest in MLB.

Giants pitchers have a strikeout rate of just 20% this season — 5th lowest in MLB.

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.