Mariners vs. Diamondbacks Dunkel MLB Picks, Predictions and Prop Bets - May 29

The Arizona Diamondbacks aim to prolong their five-game winning streak when they meet the Seattle Mariners on Friday at 10:10 p.m. ET, at T-Mobile Park. George Kirby (5-4, 3.54 ERA) gets the start for the Mariners, who are 28-29 this season and first in the AL West. Zac Gallen (3-4, 4.80 ERA) is starting for the Diamondbacks, who are 31-24 and second in the NL West.

At home, the Mariners are favored to win on the moneyline (-153) over the Diamondbacks (+128). The game's total is set at 7.

Mariners vs. Diamondbacks Odds, Game Time

• Game day: Friday, May 29, 2026
• Game time: 10:10 p.m. ET
• Location: Seattle, Washington
• Stadium: T-Mobile Park
• Favorite: Mariners (-153)
• Underdog: Diamondbacks (+128)
• Over/under: 7

How to Watch Mariners vs. Diamondbacks

• TV Channel: SEAM and ARID
• Live Stream: Fubo (Watch for free)

Bet now on FanDuel Sportsbook!

Mariners vs. Diamondbacks: Betting the Moneyline

• The Mariners have won 26 of the 52 games they were favored on the moneyline this season (50%).
• Arizona has been pegged as an underdog in 30 games this year and has walked away with the win 13 times (43.3%) in those games.
• Seattle has entered 16 games this season favored by -153 or more and is 9-7 in those contests.
• The Diamondbacks have a mark of 4-5 in contests where sportsbooks favor them by +128 or worse on the moneyline.
• Based on this game's moneyline, the Mariners' implied win probability is 60.5%.
• The Diamondbacks have an implied victory probability of 43.9% according to the moneyline set for this matchup.

Mariners vs. Diamondbacks: Betting the Spread & Total

• In the 57 games in which oddsmakers have set an over/under for the Mariners, they have combined with opponents to go over the total 26 times (26-29-2).
• Arizona and its opponents have hit the over in 28 of its 55 games with a total this season.
• The Mariners have covered just 38.6% of their games this season, going 22-35-0 ATS.
• The Diamondbacks are 33-22-0 against the spread in their 55 games with a line set by sportsbooks this season.