Mariners vs Rockies Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 19

Odds updated as of 7:13 p.m.

The MLB's Saturday slate includes the Seattle Mariners facing the Colorado Rockies.

We've got you covered, in terms of the vital info regarding this matchup before you take a look at the MLB odds and spreads on FanDuel Sportsbook.

Mariners vs Rockies Game Info

• Seattle Mariners (72-82) vs. Colorado Rockies (56-98)
• Date: Saturday, September 19, 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: (-154) | COL: (+130)
• Spread: SEA: -1.5 (+104) | COL: +1.5 (-125)
• Total: 10.5 -- Over: (-122) | Under: (+100)

Mariners vs Rockies Probable Starting Pitchers

Probable Pitchers: Bryce Miller (Mariners) - 4-9, 4.19 ERA vs José Quintana (Rockies) - 2-3, 5.27 ERA

The probable starters are Bryce Miller (4-9) for the Mariners and Jose Quintana (2-3) for the Rockies. When Miller starts, his team is 2-16-0 against the spread this season. When Miller starts a game and his team is the favorite on the moneyline, they have a record of 3-11. The Rockies have gone 5-4-0 ATS in Quintana's nine starts with a set spread. The Rockies have a 4-5 record in Quintana's nine 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 (56.8%)

Mariners vs Rockies Moneyline

• Looking at the moneyline for Rockies-Mariners, Colorado is the underdog at +130, and Seattle is -154 playing on the road.

Mariners vs Rockies Spread

• The Rockies are +1.5 on the spread (-125 to cover), and Seattle is +104 to cover the runline.

Mariners vs Rockies Over/Under

• The over/under for the Mariners versus Rockies game on Sept. 19 has been set at 10.5, with -122 odds on the over and +100 odds on the under.

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

Mariners vs Rockies Betting Trends

• The Mariners have been victorious in 58, or 49.6%, of the 117 contests they have been chosen as favorites in this season.
• Seattle has a record of 20-15 in contests when oddsmakers favor them by -154 or more on the moneyline.
• The Mariners and their opponents have hit the over in 81 of their 152 games with a total set by oddsmakers this season.
• The Mariners have an against the spread record of 56-96-0 in 152 games with a line this season.
• The Rockies have been the moneyline underdog 147 total times this season. They've finished 53-94 in those games.
• Colorado has a record of 30-74 in games it has played as a moneyline underdog with odds of +130 or longer (28.8%).
• In the 151 games oddsmakers have set an over/under for the Rockies, they have combined with opponents to go over the total 75 times (75-73-3).
• The Rockies have a 79-72-0 record against the spread this season (covering 52.3% of the time).

Mariners Player Leaders

• Randy Arozarena leads Seattle with an OBP of .378 this season while batting .281 with 63 walks and 104 runs scored. He has a slugging percentage of .480.
• Among all qualifying hitters in the majors, he is 22nd in batting average, ninth in on-base percentage, and 29th in slugging.
• Arozarena hopes to build on a seven-game hitting streak in this matchup. During his last 10 outings he is batting .385 with three doubles, three home runs, four walks and nine RBIs.
• Josh Naylor has hit 10 homers this season while driving in 54 runs. He's batting .272 this season and slugging .364 with an on-base percentage of .327.
• Among all qualified hitters, he ranks 37th in batting average, 73rd in on-base percentage and 120th in slugging percentage.
• Naylor heads into this game looking to extend his three-game hit streak. In his last five games he is hitting .333 with a double, a walk and four RBIs.
• Cole Young is batting .247 with a .387 slugging percentage and 65 RBI this year.
• Julio Rodriguez has 21 home runs, 66 RBI and a batting average of .241 this season.

Rockies Player Leaders

• Jake McCarthy has 30 doubles, 12 triples, 15 home runs and 29 walks while hitting .298. He's slugging .490 with an on-base percentage of .342.
• Including all the qualifying hitters in the big leagues, his batting average places him eighth, his on-base percentage is 53rd, and he is 20th in slugging.
• TJ Rumfield paces his team with a .392 on-base percentage, and has a club-high .453 slugging percentage. He has a batting average of .300.
• He is currently seventh in batting average, third in on-base percentage and 42nd in slugging percentage among all qualifying hitters.
• Hunter Goodman leads the Rockies with 119 hits.
• Kyle Karros has 21 doubles, three triples, 12 home runs and 50 walks while batting .259.

Mariners vs Rockies Head to Head

• 9/18/2026: 5-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 10.5, Favorite Moneyline: -186, Underdog Moneyline: +156)
• 9/25/2025: 6-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -320, Underdog Moneyline: +260)
• 9/24/2025: 9-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -300, Underdog Moneyline: +245)
• 9/23/2025: 4-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -300, Underdog Moneyline: +245)
• 4/21/2024: 10-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 11, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 4/21/2024: 2-1 COL (Favorite: Mariners, Spread: -1.5, Total: 10.5, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 4/20/2024: 7-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 9.5, Favorite Moneyline: -184, Underdog Moneyline: +154)
• 4/16/2023: 1-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -300, Underdog Moneyline: +245)
• 4/15/2023: 9-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -250, Underdog Moneyline: +205)
• 4/14/2023: 5-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -178, Underdog Moneyline: +150)

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