The Seattle Mariners (52-50) open a 3-game series on the road on Friday against the Arizona Diamondbacks (55-48). First pitch from Chase Field is at 9:40 p.m. ET. Let’s analyze BetMGM Sportsbook’s lines around the Mariners at Diamondbacks odds and make our expert MLB picks and predictions for the best bets.
Season series: First meeting since 2021 when Mariners won series 4-2
The Mariners started their 6-game road trip winning 2 of 3 games against the Minnesota Twins. They have won 2 games in a row and 5 of their last 7. They are in 4th place in the AL West, 7 1/2 games behind the division-leading Texas Rangers.
The Diamondbacks are coming off an 11-7 loss Wednesday to the St. Louis Cardinals to lose that series 2-1. They have lost 6 of the last 7 games and are 5-14 in their last 19 games. They are 3rd in the NL West, 4 games back of the Los Angeles Dodgers, and a half-game behind the final NL Wild- Card spot.
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Mariners at Diamondbacks projected starters
RHP Logan Gilbert vs. LHP Tommy Henry
Gilbert (8-5, 3.88 ERA) makes his 21st start. He has a 1.04 WHIP, 1.6 BB/9 and 8.8 K/9 in 118 1/3 innings.
- Last start: No-decision, 5 IP, 5 ER, 8 H, 1 BB, 5 K in 9-8 home win over Toronto Blue Jays on Saturday
- Mariners 4-0 in his 4 starts in July
Henry (5-3, 4.01 ERA) makes his 16th start and 17th appearance. He has a 1.37 WHIP, 3.7 BB/9 and 6.3 K/9 in 83 innings.
- Last start: Loss, 4 1/3 IP, 4 R (3 ER), 4 H, 4 BB, 2 K in 9-6 road loss to Cincinnati Reds on July 21
- D-backs have lost his last 3 starts after winning 6 of his starts in a row
Mariners 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 7:58 a.m. ET.
- Moneyline (ML): Mariners -135 (bet $135 to win $100) | Diamondbacks +115 (bet $100 to win $115)
- Run line (RL)/Against the spread (ATS): Mariners -1.5 (+120) | Diamondbacks +1.5 (-145)
- Over/Under (O/U): 9 (O: -105 | U: -115)
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Mariners at Diamondbacks picks and predictions
Prediction
Diamondbacks 6, Mariners 5
Moneyline
The Mariners are 7-3 in their last 10 road games, but still are 23-25 on the road this season. And while Arizona has struggled recently, losing 6 out of their last 7 and 14 of their last 19 games, they are still 27-26 at home.
Gilbert is 6-1 with a 3.26 ERA in 11 road starts. Henry has a 3.00 ERA in 8 games at Chase Field this season.
The Diamondbacks have lost 4 of their last 6 series openers but had won 8 of their previous 10 openers.
BET DIAMONDBACKS (+115).
Run line/Against the spread
The Mariners are 49-53 ATS this season and Arizona is 55-48 ATS. Arizona is 4-15 ATS over its last 19 games while the Mariners are 5-8 ATS over their last 13, although they are 28-20 ATS on the road. Seattle is 24-41 ATS as the favorite.
While the Diamondbacks have nice plus odds on the moneyline, if you aren’t as sure about an outright win, because of Seattle’s season trends when favored, betting some on the run line isn’t bad.
BET DIAMONDBACKS +1.5 (-145).
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Over/Under
Seven of the Diamondbacks’ last 10 games have had 10 or more total runs and 5 of Henry’s last 8 starts have had at least 9 total runs.
Six of the Mariners’ last 10 games have had at least 9 runs.
BET OVER 9 (-105).
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