Parker Messick has pitched lights out at home this season, which is a big reason the Cleveland Guardians are trading as -160 favorites.
My Diamondbacks vs. Guardians predictions and MLB picks are banking on Messick leading the way to victory with another quality start on Saturday.
Who will win Diamondbacks vs Guardians today: Cleveland Guardians (-160)
The Arizona Diamondbacks are 18-30 against teams over .500, and their struggles should continue Saturday afternoon with Kohl Drake taking the mound.
He has posted a putrid 6.55 xFIP through two starts and will raise the offensive floor and ceiling of the Cleveland Guardians, who could use the help.
Arizona generally hits lefties well but will have their hands full against Parker Messick. The young hurler has held opponents to a .205 average and allowed only 0.79 homers per nine innings.
The Guardians should provide more than enough support against Drake. Bet to -175.

Diamondbacks vs Guardians Over/Under pick: Under 8.5 (-115)
Messick has suppressed homers unbelievably well at home, conceding just 0.42 per nine innings.
The Diamondbacks slot 22nd in ISO against lefties on the road, and there aren’t many more pitcher-friendly environments than Cleveland. Hitting for power will be a challenge.
Drake lifts the floor and ceiling of the Guardians offense but it’s still not overly high. They’ve hit just .238 with a .125 ISO at home against lefties.
There is also a real chance they only get eight innings to hit in this game.
I like the Under, and would play it to -130.
- ML/RL bets: 66-60, -7.25 units
- Over/Under bets: 69-52-5, +8.49 units
Diamondbacks vs Guardians weather
The forecast calls for temperatures hovering around 80 with slight winds blowing west. No real impact on run production.
Diamondbacks vs Guardians odds
- Moneyline: Diamondbacks +140 | Guardians -160
- Run line: Diamondbacks +1.5 (-145) | Guardians -1.5 (+125)
- Over/Under: Over 8.5 (-105) | Under 8.5 (-115)
Diamondbacks vs Guardians trend
Cleveland owns a 6-0 record in Messick's last six interleague starts. Find more MLB betting trends for Diamondbacks vs. Guardians.
How to watch Diamondbacks vs Guardians and game info
| Location | Progressive Field, Cleveland, OH |
| Date | Saturday, August 1, 2026 |
| First pitch | 7:15 p.m. ET |
| TV | FOX |
| Diamondbacks starting pitcher | Kohl Drake (0-0, 5.00 ERA) |
| Guardians starting pitcher | Parker Messick (8-6, 2.59 ERA) |
Diamondbacks vs Guardians latest injuries
Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
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