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

The Arizona Diamondbacks are looking for Ketel Marte to prolong an 11-game hitting streak versus the Seattle Mariners, on Friday at 10:10 p.m. ET, at T-Mobile Park. George Kirby (5-4, 3.54 ERA) will start for the Mariners, who are 28-29 this season and first in the AL West. Zac Gallen (3-4, 4.80 ERA) is expected to start for the Diamondbacks, who are 31-24 and second in the NL West.

The Diamondbacks (+121) take their show on the road to face the favored Mariners (-144). 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 (-144)
• Underdog: Diamondbacks (+121)
• 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 listed as the moneyline favorite this season (50%).
• Arizona has come away with 13 wins in the 30 contests it has been listed as the underdogs in this season.
• This season Seattle has won 11 of its 18 games, or 61.1%, when favored by at least -144 on the moneyline.
• This year, the Diamondbacks have won four of 11 games when listed as at least +121 or worse on the moneyline.
• The Mariners have a 59% chance to win this matchup based on the moneyline's implied probability.
• The moneyline set for this matchup implies the Diamondbacks have a 45.2% chance of coming away with a victory in the contest.

Mariners vs. Diamondbacks: Betting the Spread & Total

• The Mariners have combined with opponents to hit the over on the total 26 times this season for a 26-29-2 record against the over/under.
• Arizona's games have gone over the total in 28 of its 55 chances.
• The Mariners have put together a 22-35-0 record ATS this season.
• The Diamondbacks are 33-22-0 against the spread in their 55 games with a line set by sportsbooks this season.