Cleveland Guardians vs
Arizona DiamondbacksPredictions & Preview

Guardians vs. Diamondbacks: Interleague Showdown at Chase Field Set for Monday Night

The Cleveland Guardians will face off against the Arizona Diamondbacks in an interleague showdown at Chase Field in Phoenix, Arizona on Monday, August 18, as part of the 2025 Major League Baseball season. Last year, the Diamondbacks swept a three-game series against the Guardians, who have only won one of their previous six matchups against Arizona. To learn more about this upcoming game and to see all of our MLB picks for Monday's slate, continue reading below. The first pitch at Chase Field is scheduled for 9:40 PM ET.

Betting Odds

• Moneyline: Guardians +103 | Diamondbacks -120
• Spread: Guardians +1.5 (-180) | Diamondbacks -1.5 (+155)
• Total: Over/Under 9 (-110)
• Based on the moneyline, the implied probability that Arizona will win straight-up is 55%.

Cleveland Guardians

The Cleveland Guardians recently completed a six-game homestand, winning two out of three games against the Miami Marlins but being swept by the Atlanta Braves. Overall, the Guardians have gone 7-5 in their last 12 games and currently have a season record of 63-60. They are trailing the AL Central-leading Detroit Tigers by nine games and are three games behind the bottom wild card spot in the American League. Logan Allen is set to pitch at Chase Field on Monday night, with a record of 7-9, a 3.94 ERA, and a 1.39 WHIP in 22 starts and one relief appearance this season. In his last game against the Marlins, Allen pitched five innings and allowed three runs. In his only meeting with the current Diamondbacks team, Allen pitched five innings of two-run ball. The current Diamondbacks roster has a combined 5-for-18 record against Allen with a double and two home runs.

Arizona Diamondbacks

The analysis of Sunday's games did not include the Diamondbacks' game against the Rockies as they were looking to avoid a third consecutive loss. Despite winning six of their last nine games, the Diamondbacks are unlikely to make the postseason as they were 5.5 games behind the final wild-card spot in the National League. Zac Gallen is set to pitch on Monday night with a 9-12 record and a 5.31 ERA in 25 starts this season. In his last outing, he pitched five innings in a no-decision against the Rangers. Gallen has a 2-0 record with a 4.12 ERA in three career starts against the Guardians, who have had success against him in the past.

Zac Gallen Shines as Diamondbacks' Hitting and Bullpen Puts Pressure on Guardians

Despite a challenging season for Zac Gallen, he has shown promising performances in his last three starts this month, boasting a 2-0 record with a 3.18 ERA and 3.58 FIP. The Guardians have struggled against right-handed pitchers in recent games, with a .655 OPS and 84 wRC+. On the other hand, the Diamondbacks have excelled against lefties, with a .813 OPS and 129 wRC+ in the past 10 days. Logan Allen will face a tough challenge in keeping the Diamondbacks' offense at bay. Arizona's strong hitting against both lefties and righties positions them favorably in this matchup. The Diamondbacks' bullpen has also outperformed the Guardians' bullpen in the last 10 days, with a 3.56 ERA and 1.19 WHIP compared to a 3.74 ERA and 1.25 WHIP, respectively.

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