Colorado Rockies vs Arizona Diamondbacks Pick – 8/8/2025
The Colorado Rockies and Arizona Diamondbacks will face off on Friday night at Chase Field in Phoenix. The Diamondbacks enter as substantial favorites on the moneyline. But they will need one of their top pitchers to show up for them to live up to that billing. I have broken this game down from all angles and you can find my Rockies vs Diamondbacks prediction below.
Our Rockies vs Diamondbacks Pick
- Pick: Over 9.5 runs
- Confidence: 3/5
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Game Snapshot
- Matchup: Colorado Rockies vs Arizona Diamondbacks
- Date & Time: Friday, August 8, 2025, 9:40 p.m. ET
- Starting Pitchers: Austin Gomber (0‑5, 6.18 ERA) vs Zac Gallen (8‑12, 5.48 ERA)
- Stadium: Chase Field, Phoenix, AZ
- Broadcast: ARID and COLR
Key Storylines
Pitching matchup
Both starters have struggled this season. Austin Gomber hasn’t recorded a win and has an ERA over 6.00 for the season. His last outing saw him allow four runs over five innings against Pittsburgh. Zac Gallen has been better but has still been a huge disappointment this season. He’s 8‑12 with a 5.48 ERA. But he dominates the Rockies historically with an 8‑1 record with a sub‑4.00 ERA in his career against them.
Key Players
Hunter Goodman leads the Rockies with 22 home runs and a .281 batting average. The Rockies’ offense ranks among the worst in the league but Goodman could prove dangerous against Gallen. Arizona’s lineup features young stars like Corbin Carroll (23 HR) and Ketel Marte (.284 AVG). They will look to make an instant impact against Gomber tonight.
Recent team streaks
Colorado has lost four games in a row and was just destroyed over three games by the Toronto Blue Jays. Toronto outscored Colorado 45-6 over a three-game sweep. Arizona has lost two games in a row to the red-hot San Diego Padres entering this series.
Best Player Props
| Player | Prop |
|---|---|
| Corbin Carroll | Over 0.5 Home Runs |
| Hunter Goodman | Over 0.5 Home Runs |
| Zac Gallen | Over 5.5 Strikeouts |
Betting Trends & H2H
- The Diamondbacks lead the season series 4-2 over the Rockies.
- The Diamondbacks are 2-1 in home games against the Rockies on the year.
- Colorado is 14-42 on the road.
- The Rockies are 5-20 against NL West opponents in 2025.
Rockies vs Diamondbacks Model Projection
Score Projection: Colorado 4 – Arizona 6
Win Probability: Arizona 70%, Colorado 30%
Final Thoughts
The Diamondbacks have a clear edge in terms of offensive talent and their ability to generate offense. But the starting pitching matchup might not be as lopsided as one would expect. The truth of the matter is that Zac Gallen has had a bad year for the Diamondbacks. And while Arizona should still win this game, I would much rather take the over than trust either pitcher in this game to lead their team to a victory.
