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

Odds updated as of 5:12 a.m.

The Seattle Mariners are among the MLB teams in action on Friday, up against the Colorado Rockies.

All the info you need to make smart bets on this game at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

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 look to Bryan Woo (12-9) versus the Rockies and Gabriel Hughes (0-8). When Woo starts, his team is 14-14-0 against the spread this season. When Woo starts a game and his team is the favorite on the moneyline, they have a record of 13-8. The Rockies have a 4-8-0 record against the spread in Hughes' starts. The Rockies have a 2-9 record in Hughes' 11 starts this season when they were the moneyline underdog.

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

• Looking at the moneyline for Rockies-Mariners, Colorado is the underdog at +156, and Seattle is -186 playing on the road.

Mariners vs Rockies Spread

• The Mariners are at the Rockies and are favored by 1.5 runs on the spread. The Mariners are -118 to cover the runline, with the Rockies being -102.

Mariners vs Rockies Over/Under

• A combined run total of 10.5 has been set for Mariners-Rockies on Sept. 18, with the over at -110 and the under at -110.

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

Mariners vs Rockies Betting Trends

• The Mariners have won in 57, or 49.1%, of the 116 contests they have been named as odds-on favorites in this year.
• This year Seattle has won eight of 12 games when listed as at least -186 on the moneyline.
• The Mariners and their opponents have hit the over in 81 of their 151 games with a total set by oddsmakers this season.
• The Mariners have posted a record of 56-95-0 against the spread this season.
• The Rockies have compiled a 53-93 record in games they were listed as the moneyline underdog (winning 36.3% of those games).
• Colorado is 17-44 (winning only 27.9% of its games) when it has played as a moneyline underdog of +156 or longer.
• The Rockies have had an over/under set by oddsmakers 150 times, and have combined with opponents to go over the total in 75 of those games (75-72-3).
• The Rockies are 78-72-0 against the spread this season.

Mariners Player Leaders

• Randy Arozarena leads Seattle in OBP (.375) this season, fueled by 150 hits. He has a .278 batting average and a slugging percentage of .476.
• Among the qualified hitters in baseball, 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. During his last 10 games he is batting .359 with two doubles, three home runs, four walks and nine RBIs.
• Josh Naylor has hit 10 homers this season while driving in 52 runs. He's batting .272 this season and slugging .365 with an on-base percentage of .327.
• Among qualified hitters, his batting average places him 38th, his on-base percentage 75th, and his slugging percentage 119th.
• 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 has logged a hit or more in two straight games. In his last five games he is batting .333 with three doubles, three walks and an RBI.
• Cole Young has been key for Seattle with 136 hits, an OBP of .309 plus a slugging percentage of .387.

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.
• He ranks eighth in batting average, 55th in on-base percentage and 20th in slugging percentage among all qualifying hitters in MLB.
• TJ Rumfield leads his team with a .393 on-base percentage, and has a club-best .456 slugging percentage. He has a batting average of .301.
• Including all qualified hitters, his batting average puts him seventh, his on-base percentage is third, and he is 41st in slugging.
• Hunter Goodman is leading the Rockies with 118 hits.
• Kyle Karros has 21 doubles, three triples, 12 home runs and 50 walks while hitting .260.

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