The St. Louis Cardinals (45-57) and the Arizona Diamondbacks (55-47) e wrap up a 3-game series Wednesday at Chase Field in Phoenix. First pitch is scheduled for 3:40 p.m. ET. Let’s analyze BetMGM Sportsbook’s lines around the Cardinals vs. Diamondbacks odds and make our expert MLB picks and predictions for the best bets.
Season series: Diamondbacks lead 3-2 after Tuesday’s 3-1 victory
The Cardinals lost for the 4th time in the last 5 games, splashing a bit of cold water on the team’s momentum after a 6-game winning streak from July 15-20. St. Louis managed just a single run Tuesday, the lowest offensive output for the Cards since getting blanked 14-0 on June 29 against the Houston Astros.
The Diamondbacks snapped a 5-game losing streak with Tuesday’s 3-1 win behind RHP Merrill Kelly. The single run allowed by Arizona pitching was the lowest conceded since July 1 on the road against the Los Angeles Angels.
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Cardinals at Diamondbacks projected starters
RHP Jack Flaherty vs. RHP Zac Gallen
Flaherty (7-6, 4.39 ERA) makes his 20th start. He has a 1.53 WHIP, 4.5 BB/9 and 8.8 K/9 in 104 2/3 innings.
- Last start: Loss, 6 IP, 4 ER, 8 H (2 HR), 1 BB, 6 K in a 4-3 road loss vs. the Chicago Cubs Friday
- 2023 road splits: 3-3, 3.55 ERA (63 1/3 IP, 25 ER – 6 HR), .289 opponent batting average (OBA) in 11 starts
- 2023 vs. Arizona: Loss, 6 IP, 4 ER, 4 H (1 HR), 3 BB, 4 K in a 6-3 home loss April 17
Gallen (11-4, 3.18 ERA) makes his 22nd start. He has a 1.06 WHIP, 1.8 BB/9 and 9.3 K/9 in 130 1/3 innings.
- Last start: No-decision, 7 IP, 3 ER, 5 H, 0 BB, 5 K in a 7-5 road loss vs. the Atlanta Braves last Thursday
- 2023 home splits: 9-0, 1.48 ERA (67 IP, 11 ER – 3 HR), .198 OBA in 10 starts
Cardinals at Diamondbacks odds
Provided by BetMGM Sportsbook; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 8:02 a.m. ET.
- Moneyline (ML): Cardinals +125 (bet $100 to win $125) | Diamondbacks -155 (bet $155 to win $100)
- Run line (RL)/Against the spread (ATS): Cardinals +1.5 (-155) | Diamondbacks -1.5 (+125)
- Over/Under (O/U): 8.5 (O: -120 | U: +100)
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Cardinals at Diamondbacks picks and predictions
Prediction
Diamondbacks 4, Cardinals 2
Moneyline
The DIAMONDBACKS (-155) are a slam-dunk play in the series finale behind the All-Star starter Gallen. In fact, it’s a bit surprising that this number is not a little higher.
Gallen is a dominant 9-0 with a minuscule 1.48 ERA in 10 home outings, and 9 of his 10 home outings have resulted in quality starts, too. The Cardinals (+125) will be on the short end in this getaway day game.
Run line/Against the spread
The DIAMONDBACKS -1.5 (+125) are a little more risky of a play on the run line, as they’re still just 1-5 in the last 6 games overall.
Arizona is also 1-5 in the last 6 games on the run line at home, losing 4 of the outings outright. Still, it covered Gallen’s only start during that stretch, and the Snakes have covered 3 straight games at home as a favorite with the All-Star on the mound.
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Over/Under
UNDER 8.5 (+100) is worth a look with Gallen on the bump. He has allowed 3 or fewer runs in 3 straight starts, and 5 of the previous 7 outings, too.
The Over has cashed in 4 of the last 6 starts for Flaherty, but the Under is 3-1 in his last 4 road outings.
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