Mariners vs Diamondbacks Odds, Picks & Predictions: June 10 MLB Betting Preview

The Seattle Mariners (33-31) begin a three-game interleague series against the Arizona Diamondbacks (31-34) at Chase Field in Phoenix on Monday night. First pitch is scheduled for 9:40 p.m. ET and the game will be broadcast on FS1. Below, we break down the latest Mariners vs Diamondbacks odds, pitching matchup, and top MLB betting picks for tonight’s game, courtesy of BetMGM Sportsbook.

Mariners vs Diamondbacks: Series Outlook

This is the first meeting between these two teams in the 2025 season. The Mariners edged out the Diamondbacks 2-1 in their 2024 series.

Seattle snapped a five-game losing streak with a 3-2 win over the Angels on Sunday. Notably, they pulled off the road victory without star catcher and MLB home run leader Cal Raleigh (26 HR) in the lineup.

Arizona, on the other hand, was swept in three games by the Reds over the weekend, getting outscored 21-6. That slump followed an impressive sweep of the Braves earlier in the week. The Diamondbacks have alternated Over and Under outcomes in each of their last 8 games.

Key Players on Sunday:

• Eugenio Suarez (ARI): 1-for-4 with a solo homer, his 18th of the season.
• Corbin Carroll (ARI): 1-for-3 with a walk and an RBI from the leadoff spot.

Mariners vs Diamondbacks Starting Pitchers

Seattle Mariners: Emerson Hancock (2-2, 5.19 ERA)

• WHIP: 1.47 | BB/9: 3.0 | K/9: 6.8
• Last start: 5.2 IP, 1 ER, 6 K vs Orioles
• 2025 Road: 2-0, 3.25 ERA across 5 starts
• Vs. Diamondbacks: 1-0, 6 IP, 1 ER (April 26, 2024)

Arizona Diamondbacks: Merrill Kelly (6-2, 3.43 ERA)

• WHIP: 0.99 | BB/9: 2.3 | K/9: 8.5
• Last start: 7 IP, 0 ER, 8 K vs Braves
• 2025 Home: 3-1, 3.03 ERA in 6 starts
• Vs. Mariners: 0-1, 5 IP, 3 ER (July 30, 2023)

Mariners vs Diamondbacks Betting Odds (via BetMGM)

• Moneyline: Mariners +140 | Diamondbacks -170
• Run Line: Mariners +1.5 (-150) | Diamondbacks -1.5 (+125)
• Over/Under: 9.5 (Over -102 | Under -118)

Mariners vs Diamondbacks Predictions & Best Bets

✅ Prediction: Diamondbacks 5, Mariners 2

💰 Moneyline: Back Arizona (-170)

Kelly has been sharp at home and brings consistency to the mound. Hancock has struggled with control (6 HRs allowed in last 5 starts) and could falter against Arizona’s lineup. Back the Diamondbacks to bounce back on their home field.

🧾 Run Line: Lean Diamondbacks -1.5 (+125)

This plus-money play carries risk—Arizona is 1-7 ATS as a favorite in their last 8 games. However, if you expect a rebound game, this could offer solid value.

📉 Over/Under: Take the Under 9.5 (-118)

Seattle has hit the Under in 4 of its last 7 games, and Hancock’s recent outings have trended low-scoring. Arizona games have alternated between Over and Under, but both starting pitchers have shown the ability to control lineups.

More MLB Betting Tools & Resources

• 🎯 Expert MLB picks and betting insights available daily at SportsbookWire.com
• 📊 Win your fantasy league with tools and projections from BaseballHQ.com

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