The San Francisco Giants and Arizona Diamondbacks wrap up their four-game series on Thursday, July 3, 2025, in a late-night showdown at Chase Field. First pitch is scheduled for 9:40 p.m. ET, and here you will find my Giants vs Diamondbacks prediction before first pitch in Phoenix.
Our Giants vs Diamondbacks Pick
- Pick: Arizona Diamondbacks Moneyline (+102)
- Confidence: ★★★★☆
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Game Snapshot
- Matchup: San Francisco Giants vs Arizona Diamondbacks
- Date & Time: Thursday, July 3, 2025, 9:40 p.m. ET
- Starting Pitchers:
- Giants: Robbie Ray (8‑3, 2.75 ERA, 1.15 WHIP)
- Diamondbacks: Brandon Pfaadt (8‑5, 5.38 ERA, 1.38 WHIP)
- Stadium: Chase Field, Phoenix, AZ
- Broadcast: ARID and NBCS‑BA
Key Storylines
Pitching form
Robbie Ray is in top form, entering the night with an 8‑3 record with a 2.75 ERA over 17 starts. He averages a strikeout rate north of 10 K/9. Arizona’s Brandon Pfaadt has struggled, owning a 5.38 ERA and we need to see more from him if the Diamondbacks are going to come away with a win at home in this game.
Bullpen usage
San Francisco’s bullpen is MLB‑elite, ranking first in bullpen ERA (2.95) and known for lockdown late innings. Arizona’s pen is more vulnerable, with a 5.22 ERA that ranks in the bottom five in the league.
Recent team streaks
The Diamondbacks have gone 2–3 recently, but they have won two of the first three games in this series. Meanwhile, San Francisco has dropped seven of their last 10 games, though they did win in Arizona last night.
Best Player Props
| Player | Prop | Odds |
|---|---|---|
| Robbie Ray | Over 5.5 Ks | −150 |
| Brandon Pfaadt | Over 4.5 Ks | −155 |
| Ketel Marte | Over 1.5 Total Bases | -115 |
Betting Trends & H2H
- Arizona leads the season series between these teams 4-2.
- The Giants are 21-24 on the road this year, the Diamondbacks are 22-22 at home.
- Arizona has scored 90 more runs this season than the Giants, but has allowed 106 more runs.
Giants vs Diamondbacks Model Projection
Score Projection: Giants 4 – Diamondbacks 5
Win Probability: Giants 46%, Diamondbacks 54%
Final Thoughts
Despite Ray’s dominance on the mound, Arizona’s offensive depth gives the D‑backs an edge at home tonight. Betting patterns show sharp resistance to the Giants line, and historical trends support backing Arizona. My model leans toward a close win for the Diamondbacks, as Pfaadt should do just enough to keep his team in this game and let Arizona’s bats make the difference.
Jay Sanin is a sports bettor, writer and broadcaster from New York. He is an avid New York Knicks fan and is no longer ashamed to admit it. He is also an avid New York Giants fan, and is very ashamed to admit it. His top sports to handicap are the NBA, WNBA and men’s tennis for some reason. He has watched more UAlbany Great Danes basketball than anyone should consume.
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