Rockies vs Diamondbacks Prediction, Odds & Player Prop Bets Today – MLB, Aug 12

Arizona Diamondbacks designated hitter Lourdes Gurriel Jr. bats during the third inning of a baseball game, Saturday, June 10, 2023, in Detroit.
(AP Photo/Carlos Osorio)
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  • The Diamondbacks are -185 favorites vs the Rockies
  • Rockies vs Diamondbacks Over / Under today: 9.5 Runs
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The Colorado Rockies (+150) visit Chase Field to take on the Arizona Diamondbacks (-185) on August 12, 2026. First pitch is scheduled for 3:40 pm in Phoenix, AZ.

This season, the Rockies are 47-73 against the spread (ATS), while the Diamondbacks are 65-52 ATS.

Rockies vs Diamondbacks Starting Pitchers Today:

  • Rockies starting pitcher: Ryan Feltner 4-6, 5.71 ERA
  • Diamondbacks starting pitcher: Merrill Kelly 8-9, 4.89 ERA

Rockies vs. Diamondbacks Odds, Run Line, Over/Under & Moneyline

SpreadOver / UnderMoneyline
Rockies+1.5 -135O 9.5 -120+150
Diamondbacks -1.5 +110U 9.5 +100-185

Rockies vs Diamondbacks Prediction for Today’s Game

Based on recent trends the model predicts the Diamondbacks will win Wednesday‘s MLB game with 62.3% 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 Rockies players for Wednesday‘s game, looking at profitable historical betting trends:

Best Rockies Player Prop Bets Today:

  • Troy Johnston has hit the Total Bases Under in 18 of his last 25 games (+10.50 Units / 30% ROI)
  • Jake McCarthy has hit the Home Runs Over in 2 of his last 9 games (+9.90 Units / 110% ROI)
  • Hunter Goodman has hit the Runs Under in 18 of his last 25 games (+9.65 Units / 28% ROI)
  • Jake McCarthy has hit the Hits Over in 18 of his last 25 away games (+9.05 Units / 19% ROI)
  • Jordan Beck has hit the Hits Runs and RBIs Under in 9 of his last 10 away games (+8.35 Units / 67% ROI)

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

Best Diamondbacks Player Prop Best Bets Today:

  • Nolan Arenado has hit the Home Runs Over in 4 of his last 9 games at home (+19.40 Units / 216% ROI)
  • Gabriel Moreno has hit the RBIs Over in 13 of his last 20 games (+14.20 Units / 71% ROI)
  • Corbin Carroll has hit the Singles Under in 17 of his last 20 games at home (+12.55 Units / 43% ROI)
  • Gabriel Moreno has hit the Hits Over in 18 of his last 25 games (+11.40 Units / 25% ROI)
  • Nolan Arenado has hit the Hits Runs and RBIs Over in 15 of his last 20 games at home (+10.40 Units / 47% ROI)
  • The Colorado Rockies have hit the 1st Five Innings (F5) Team Total Under in 14 of their last 23 away games (+4.95 Units / 18% ROI)
  • The Colorado Rockies have covered the Run Line in 15 of their last 24 away games (+3.55 Units / 11% ROI)
  • The Colorado Rockies have hit the Team Total Over in 23 of their last 40 games (+3.25 Units / 7% ROI)
  • The Colorado Rockies have hit the Game Total Over in 6 of their last 9 away games (+2.50 Units / 24% ROI)
  • The Colorado Rockies have covered the 1st Five Innings (F5) Run Line in 13 of their last 25 games (+0.25 Units / 1% ROI)
  • The Arizona Diamondbacks have hit the Moneyline in 19 of their last 30 games (+11.40 Units / 33% ROI)
  • The Arizona Diamondbacks have covered the 1st Five Innings (F5) Run Line in 18 of their last 25 games at home (+11.05 Units / 39% ROI)
  • The Arizona Diamondbacks have hit the Game Total Under in 29 of their last 50 games at home (+10.40 Units / 19% ROI)
  • The Arizona Diamondbacks have hit the 1st Five Innings (F5) Team Total Under in 31 of their last 50 games at home (+8.65 Units / 14% ROI)
  • The Arizona Diamondbacks have hit the 1st Five Innings (F5) Moneyline in 16 of their last 25 games at home (+8.20 Units / 26% ROI)

Rockies Against the Spread (ATS) Record

Against the spread this season, the Rockies are 63-57 against the Run Line (-4.85 Units / -3.25% ROI).

  • 47-73 when betting on the Moneyline for -3.55 Units / -2.93% ROI
  • 57-60 when betting on the total runs Over for -9.85 Units / -7.37% ROI
  • 60-57 when betting on the total runs Under for -1.95 Units / -1.5% ROI

Diamondbacks Against the Spread (ATS) Record

Against the spread this season, the Diamondbacks are 65-52 against the Run Line (+3.55 Units / 2.2% ROI).

  • 64-57 when betting on the Moneyline for +8.5 Units / 6.02% ROI
  • 50-65 when betting on the total runs Over for -21.55 Units / -16.11% ROI
  • 65-50 when betting on the total runs Under for +10.55 Units / 7.96% ROI

Diamondbacks vs Rockies Home Run Prop Bets Today

Yes
Hunter Goodman +280
Mickey Moniak +375
Corbin Carroll +400
Ketel Marte +425
Nolan Arenado +525

Diamondbacks vs Rockies Total Hits Prop Bets Today

Over Under
Geraldo Perdomo 0.5 -250 0.5 +180
Corbin Carroll 0.5 -250 0.5 +180
Ketel Marte 0.5 -235 0.5 +175
TJ Rumfield 0.5 -235 0.5 +175
Cole Carrigg 0.5 -235 0.5 +170

Diamondbacks vs Rockies Strikeout Prop Bets Today

Over Under
Willi Castro 0.5 -235 0.5 +175
Ryan Waldschmidt 0.5 -225 0.5 +165
Mickey Moniak 0.5 -200 0.5 +150
Cole Carrigg 0.5 -190 0.5 +140
Corbin Carroll 0.5 -190 0.5 +140

Rockies Keys to the Game vs. the Diamondbacks

The Rockies were just 43-119 (.265) in the 2025 season — lowest in MLB; League Avg: .500.

The Rockies were just 40-96 (.294) when allowing 5 or more extra base hits in the 2025 season — lowest in MLB; League Avg: .535.

The Rockies were just 50-9 (.833) when leading entering the 9th inning in the 2024 season — lowest in MLB; League Avg: .949.

The Rockies were just 44-10 (.800) when leading entering the 8th inning in the 2024 season — 2nd lowest in MLB; League Avg: .899.

Diamondbacks Keys to the Game vs. the Rockies

The Diamondbacks were just 67-7 (.905) when leading entering the 9th inning in the 2025 season — 2nd lowest in MLB; League Avg: .956.

The Diamondbacks were just 67-13 (.838) when leading entering the 8th inning in the 2025 season — tied for 2nd lowest in MLB; League Avg: .909.

The Diamondbacks were just 61-17 (.782) when leading entering the 7th inning in the 2025 season — 2nd lowest in MLB; League Avg: .875.

The Diamondbacks were 67-15 (.807) when they allowed 4 or fewer runs in the 2024 season — 3rd best in MLB; League Avg: .723.

Rockies hitters have a swing rate of 41% on the first pitch of at-bats this season — highest in MLB.

Rockies hitters have chased 37% of pitches out of the zone against LHP this season — highest in MLB.

Rockies hitters have a swing rate of 52% this season — highest in MLB.

Rockies hitters have chased 29% of pitches out of the zone in non-two strike counts this season — highest in MLB.

The Diamondbacks are batting .278 against LHP this season — best in MLB.

Diamondbacks hitters have struck out in just 17% of their PA’s against LHP this season — best in MLB.

Diamondbacks hitters have put 41% of their swings in play against LHP this season — highest in MLB.

Diamondbacks hitters have a swing rate of just 25% on the first pitch of at-bats this season — lowest in MLB.

Rockies pitchers have allowed a slugging percentage of .491 this season — highest in MLB.

Opponents are hitting .288 against Rockies pitchers this season — highest in MLB.

Rockies pitchers have an ERA of 5.81 (534.0 IP) at home this season — 2nd highest in MLB.

Rockies pitchers have allowed a run 41% of the time after their offense scores this season — highest in MLB.

Opponents have a miss rate of just 22% against Diamondbacks pitchers this season — 2nd lowest in MLB.

Diamondbacks pitchers have a strikeout rate of just 38% with two-strikes this season — 3rd lowest in MLB.

Diamondbacks pitchers have struck out just 17% of left-handed batters they faced this season — lowest in MLB.

The Diamondbacks pitchers have allowed division opponents to score first in just 37% of their games this season — 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.