Mariners vs Rockies Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 18

Odds updated as of 4:12 a.m.

On Friday in MLB, the Seattle Mariners are playing the Colorado Rockies.

Before you do any MLB betting on this matchup at FanDuel Sportsbook, here's everything you need to know.

Mariners vs Rockies Game Info

• Seattle Mariners (71-82) vs. Colorado Rockies (56-97)
• Date: Friday, September 18, 2026
• Time: 8:10 p.m. ET
• Venue: Coors Field -- Denver, Colorado
• Coverage: Rockies.TV and Mariners.TV

Mariners vs Rockies Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-186) | COL: (+156)
• Spread: SEA: -1.5 (-118) | COL: +1.5 (-102)
• Total: 10.5 -- Over: (-110) | Under: (-110)

Mariners vs Rockies Probable Starting Pitchers

Probable Pitchers: Bryan Woo (Mariners) - 12-9, 3.88 ERA vs Gabriel Hughes (Rockies) - 0-8, 6.37 ERA

The Mariners will call on Bryan Woo (12-9) versus the Rockies and Gabriel Hughes (0-8). Woo's team is 14-14-0 against the spread in his starts this season. Woo's team is 13-8 this season when he starts and they are the moneyline favorite. The Rockies are 4-8-0 against the spread when Hughes starts. The Rockies have a 2-9 record in Hughes' 11 starts this season when they were the underdog on the moneyline.

Mariners vs Rockies Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (64.1%)

Mariners vs Rockies Moneyline

• Colorado is a +156 underdog on the moneyline, while Seattle is a -186 favorite on the road.

Mariners vs Rockies Spread

• The Rockies are +1.5 on the spread (-102 to cover), and Seattle is -118 to cover the runline.

Mariners vs Rockies Over/Under

• The over/under for the Mariners versus Rockies contest on Sept. 18 has been set at 10.5, with -110 odds on the over and -110 odds on the under.

Bet on Seattle Mariners vs. Colorado Rockies on FanDuel today!

Mariners vs Rockies Betting Trends

• The Mariners have been favorites in 116 games this season and have come away with the win 57 times (49.1%) in those contests.
• This season Seattle has come away with a win eight times in 12 chances when named as a favorite of at least -186 on the moneyline.
• The Mariners and their opponents have gone over in 81 of their 151 games with a total set by sportsbooks this season.
• The Mariners have an against the spread mark of 56-95-0 in 151 games with a line this season.
• The Rockies have gone 53-93 in games they were listed as the moneyline underdog (winning 36.3% of those games).
• When playing as a moneyline underdog with odds of +156 or longer, Colorado has gone 17-44 (27.9%).
• In the 150 games bookmakers have set an over/under for the Rockies, they have combined with opponents to go over the total 75 times (75-72-3).
• The Rockies have gone 78-72-0 ATS this season.

Mariners Player Leaders

• Randy Arozarena has 150 hits this season and a team-best OBP of .375. He has a .278 batting average and a slugging percentage of .476.
• Among qualifying hitters in MLB, his batting average ranks 24th, his on-base percentage ranks 11th, and he is 29th in slugging.
• Arozarena hopes to build on a six-game hitting streak in this matchup. In his last 10 games he is hitting .359 with two doubles, three home runs, four walks and nine RBIs.
• Josh Naylor has an OPS of .692, fueled by an OBP of .327 and a team-best slugging percentage of .365 this season. He's batting .272.
• Among all qualified, he is 38th in batting average, 75th in on-base percentage and 119th in slugging percentage.
• Naylor enters this game looking to extend his two-game hit streak. During his last five outings he is batting .409 with two doubles, a walk and three RBIs.
• Julio Rodriguez is batting .243 with a .397 slugging percentage and 66 RBI this year.
• Rodriguez takes a two-game hitting streak into this matchup. In his last five games he is hitting .333 with three doubles, three walks and an RBI.
• Cole Young has 17 home runs, 65 RBI and a batting average of .247 this season.

Rockies Player Leaders

• Jake McCarthy is hitting .295 with 30 doubles, 11 triples, 15 home runs and 29 walks. He's slugging .485 with an on-base percentage of .340.
• Including all the qualified players in MLB, his batting average ranks eighth, his on-base percentage is 55th, and he is 20th in slugging.
• TJ Rumfield's .393 OBP and .456 slugging percentage are both team-highs. He has a batting average of .301.
• He is currently seventh in batting average, third in on-base percentage and 41st in slugging percentage among all qualifying hitters.
• Hunter Goodman has 118 hits, a team-high for the Rockies.
• Kyle Karros is hitting .260 with 21 doubles, three triples, 12 home runs and 50 walks.

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