Mariners vs. Rockies Dunkel MLB Picks, Predictions and Prop Bets - Sept. 18

The Seattle Mariners visit the Colorado Rockies to start a three-game series at Coors Field, with first pitch at 8:10 p.m. ET on Friday. Bryan Woo (12-9, 3.88 ERA) will start for the Mariners, who are 71-82 this season and third in the AL West. Gabriel Hughes (0-8, 6.37 ERA) is starting for the Rockies, who are 56-97 and fifth in the NL West.

Even though the Mariners are playing on the road at the Rockies, they are currently favored on the moneyline at -190, compared to the home team at +154. The over/under in this contest is set at 10.5.

Mariners vs. Rockies Odds, Game Time

• Game day: Friday, September 18, 2026
• Game time: 8:10 p.m. ET
• Location: Denver, Colorado
• Stadium: Coors Field
• Favorite: Mariners (-190)
• Underdog: Rockies (+154)
• Over/under: 10.5

How to Watch Mariners vs. Rockies

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

Bet now on FanDuel Sportsbook!

Mariners vs. Rockies: Betting the Moneyline

• The Mariners have a 58-59 record in games they were listed as the moneyline favorite (winning 49.6% of those games).
• Colorado has been victorious in 54, or 36.2%, of the 149 contests it has been chosen as underdogs in this season.
• Seattle has a record of 7-4 in games when oddsmakers favor them by at least -190 on the moneyline.
• The Rockies have a mark of 17-48 in contests where oddsmakers favor them by +154 or worse on the moneyline.
• The Mariners have a 65.5% chance to win this matchup based on the moneyline's implied probability.
• The moneyline set for this matchup implies the Rockies have a 39.4% chance of walking away with the win.

Mariners vs. Rockies: Betting the Spread & Total

• The Mariners have had an over/under set by bookmakers 153 times, and have combined with opponents to go over the total in 80 of those games (80-64-9).
• Colorado and its opponents have hit the over in 75 of its 153 games with a total this season.
• The Mariners have a 58-95-0 record ATS this season (covering only 37.9% of the time).
• The Rockies have an against the spread mark of 79-74-0 in 153 games with a line this season.