Chicago Cubs vs Arizona Diamondbacks Picks and Prediction for Wednesday August 26, 2026

The Chicago Cubs travel to face the Arizona Diamondbacks at Chase Field in Phoenix, Arizona, on Wednesday, August 26. First pitch is scheduled for 3:40 p.m. ET, with coverage available on ESPN Unlimited and MLB.TV. Chicago enters the matchup at 76-56 overall and 38-29 on the road, while Arizona sits at 69-63 with a 38-29 record at home.

Chicago comes into the series finale with consecutive victories, including a dominant 7-0 win over Arizona in Monday's opener. The Cubs have been one of the stronger teams in the National League this season, while Arizona remains above .500 and firmly competitive despite dropping the first game of this series.

At the time of this writing the odds were not released.

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Starting Pitchers

The Cubs are expected to start Matthew Boyd, who enters Wednesday at 8-2 with a 4.15 ERA and 1.24 WHIP across 91 innings. The left-hander has allowed 85 hits while recording 71 strikeouts against 28 walks, and he has surrendered 14 home runs. Boyd's win-loss record has been strong, but his ERA shows that he has not been dominant throughout the season, creating some risk against an Arizona club that has shown the ability to put up runs in bunches.

Arizona counters with Eduardo Rodriguez, who enters the matchup at 13-4 with a 2.61 ERA and 1.21 WHIP over 155 innings. The left-hander has allowed 138 hits while striking out 110 and walking 49, and he has also surrendered 14 home runs. Rodriguez owns the clear statistical edge in the starting-pitching matchup, with a substantially lower ERA while maintaining a similar WHIP. That advantage gives Arizona a strong foundation as it looks to respond after being shut out in the series opener.

Cubs Bring the Better Offensive Profile

Chicago enters Wednesday at 76-56 overall and has been especially effective away from home at 38-29. The Cubs have won back-to-back games, defeating Arizona 7-0 after routing Seattle 19-2. Those two victories followed three consecutive losses, so Chicago has responded strongly and enters this matchup with renewed momentum.

The Cubs have been one of the more productive offensive teams in the league, batting .250 with 1,135 hits, 691 runs and 176 home runs. Their .339 on-base percentage and .424 slugging percentage both stand out when compared with Arizona's numbers. On the mound, Chicago owns a 4.09 team ERA and 1.25 WHIP while holding opponents to a .243 batting average.

Chicago's biggest advantage is its ability to create offense in multiple ways. The Cubs have scored 93 more runs than Arizona and have hit 47 more home runs, giving them a clear edge in overall offensive production. The challenge Wednesday is whether that lineup can overcome a significant disadvantage in the starting-pitching matchup.

Diamondbacks Look to Bounce Back at Home

Arizona enters the series finale at 69-63 overall and 38-29 at Chase Field. The Diamondbacks have been inconsistent recently, alternating wins and losses over their last five games. They were shut out 7-0 by Chicago in Monday's opener after previously defeating Cincinnati 5-3, while their recent stretch has also included wins of 9-0 and 7-6.

The Diamondbacks are batting .244 with 1,082 hits, 598 runs and 129 home runs. They carry a .317 on-base percentage and .399 slugging percentage, both lower than Chicago's marks. Arizona's pitching staff owns a 4.21 ERA and 1.30 WHIP while allowing opponents to bat .253, which also trails Chicago's overall pitching numbers.

Arizona's clearest path to victory is the starting-pitching advantage. The Diamondbacks are behind Chicago in most of the major offensive categories and also trail slightly in overall team pitching, but Rodriguez gives them an opportunity to control the game early. If Arizona can keep Chicago's offense quiet through the middle innings, its strong home record becomes much more relevant.

Chicago Cubs vs Arizona Diamondbacks Picks and Prediction

Pick: Arizona Diamondbacks Moneyline

Chicago has the better season-long offensive profile and enters with consecutive impressive wins, but Arizona has the more favorable starting-pitching matchup Wednesday. Rodriguez brings a 2.61 ERA and 1.21 WHIP into the game, compared with Boyd's 4.15 ERA and 1.24 WHIP. Arizona is also 38-29 at home, matching Chicago's strong road mark, which reduces the Cubs' situational edge. With the Diamondbacks coming off a shutout loss and holding the stronger starter, Arizona is the preferred side in the series finale.

Pick: Under 8.5

Take the under if the total is set at 8.5 or higher. Arizona was held scoreless in Monday's opener, while Rodriguez's 2.61 ERA gives the Diamondbacks a strong chance to limit a Chicago offense that has been explosive recently. Boyd's 4.15 ERA creates some concern, but Arizona's .244 batting average and .317 on-base percentage are not especially imposing, while Chicago's staff has held opponents to a .243 average. With both teams capable of getting quality innings from the mound and one starter carrying a clear advantage, the under is the stronger total position at 8.5.

This preview was completed prior to game play on Tuesday. Any lineup changes, pitching changes, injuries, scratches, or betting-line movement occurring after that time are not reflected in this analysis.