The Baltimore Orioles (84-51) and Arizona Diamondbacks (70-66) wrap up a 3-game series at Chase Field Sunday. First pitch is slated for 4:10 p.m. ET (ESPN+). Let’s analyze BetMGM Sportsbook’s lines around the Orioles vs. Diamondbacks odds and make our expert MLB picks and predictions for the best bets.
Season series: Tied 1-1
The Orioles are looking to start their 9-game road trip with a series victory in Arizona. Baltimore has won 3 of their last 4 road series and is 42-25 on the road this season.
Saturday’s 7-3 loss to the Orioles was Arizona’s 4th in its last 5 games. The Diamondbacks have allowed 6.4 runs per game over this stretch. They are 37-32 at Chase Field this season.
Orioles at Diamondbacks projected starters
RHP Jack Flaherty vs. RHP Zac Gallen
Flaherty (8-8, 4.73 ERA) makes his 25th start. He has a 1.55 WHIP, 4.4 BB/9 and 8.9 K/9 in 129 1/3 innings for the St. Louis Cardinals and Orioles.
- Last start: No-decision, 5 2/3 IP, 3 ER, 7 H, 1 BB, 3 K in 4-3 loss at the Colorado Rockies on Wednesday
- 2023 vs. Diamondbacks: 0-1, 5.73 ERA (11 IP, 7 ER) in 2 starts with the Cardinals
- 2023 road stats: 4-4, 4.19 ERA (77 1/3 IP, 36 ER), .287 OBA in 14 starts
Gallen (14-6, 3.32 ERA) will make his 29th start. He has a 1.10 WHIP, 1.9 BB/9 and 9.5 K/9 in 173 1/3 innings.
- Last start: Loss, 5 1/3 IP, 6 ER, 9 H, 3 BB, 3 K in 7-4 loss at Los Angeles Dodgers Monday
- Has never started against the Orioles
- 2023 home stats: 11-1, 1.79 ERA (85 1/3 IP, 17 ER), .211 opponent batting average (OBA) in 13 starts
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Orioles 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 6:22 a.m. ET.
- Moneyline (ML): Orioles +115 (bet $100 to win $115) | Diamondbacks -140 (bet $140 to win $100)
- Run line (RL)/Against the spread (ATS): Orioles +1.5 (-165) | Diamondbacks -1.5 (+140)
- Over/Under (O/U): 8.5 (O: -105 | U: -115)
Orioles at Diamondbacks picks and predictions
Prediction
Diamondbacks 4, Orioles 2
Moneyline
PASS.
I’m backing Gallen in this ballgame. He has been fantastic at Chase Field this season and while I see that continuing on Sunday, I’m going to pass here and bet the better value on the run line.
Run line/Against the spread
BET DIAMONDBACKS -1.5 (+140).
If you believe Arizona is going to win the game, believe they will win by multiple runs and put your money down on the +140 rather than on the -140. The D-backs are looking to win their 4th straight home series and 4 of the last 5 wins at home have been by 2 runs or more.
After a stellar first start for Flaherty with the Orioles, he has allowed 13 ER in his last 13 2/3 innings pitched.
Over/Under
BET UNDER 8.5 (-115).
This will be a lower-scoring affair with 2 good pitchers on the mound. Gallen has an ERA under 2 at home and hasn’t allowed more than a run in a start at home in over a month. So he’ll tame Baltimore’s lineup for 6-plus innings while Flaherty allows 2-3 runs over his 5 innings and that’ll be it.
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