Mariners vs Rockies Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 25

Odds updated as of 9:12 a.m.

Thursday's slate in the MLB includes a matchup between the Seattle Mariners and the Colorado Rockies.

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

Mariners vs Rockies Game Info

• Seattle Mariners (89-69) vs. Colorado Rockies (43-115)
• Date: Thursday, September 25, 2025
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: ROOT Sports NW and COLR

Mariners vs Rockies Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-205) | COL: (+172)
• Spread: SEA: -1.5 (-100) | COL: +1.5 (-120)
• Total: 8 -- Over: (-105) | Under: (-115)

Mariners vs Rockies Probable Starting Pitchers

Probable Pitchers: TBA (Mariners) vs Bradley Blalock (Rockies) - 2-5, 0.00 ERA

Blalock (2-5) will start for the Rockies. As of this writing, there's been no pitching decision announced by the Mariners. The Rockies have a 4-6-0 ATS record in Blalock's 10 starts that had a set spread. The Rockies have been the underdog on the moneyline in 10 of Blalock's starts this season, and they went 2-8 in those games.

Mariners vs Rockies Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (70.3%)

Mariners vs Rockies Moneyline

• Colorado is a +172 underdog on the moneyline, while Seattle is a -205 favorite at home.

Mariners vs Rockies Spread

• The Rockies are at +1.5 on the runline against the Mariners. The Rockies are -120 to cover the spread, and the Mariners are -100.

Mariners vs Rockies Over/Under

• The Mariners-Rockies game on Sept. 25 has been given an over/under of 8 runs. The over is set at -105 and the under at -115.

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

Mariners vs Rockies Betting Trends

• The Mariners have won in 65, or 60.2%, of the 108 contests they have been named as odds-on favorites in this year.
• This season Seattle has come away with a win 12 times in 14 chances when named as a favorite of at least -205 on the moneyline.
• The Mariners and their opponents have gone over the total this season in 83 of their 153 opportunities.
• The Mariners have posted a record of 69-84-0 against the spread this season.
• The Rockies have been the underdog on the moneyline 148 total times this season. They've gone 38-110 in those games.
• Colorado has a 16-71 record (winning only 18.4% of its games) when it has played as a moneyline underdog of +172 or longer.
• In the 153 games oddsmakers have set an over/under for the Rockies, they have combined with opponents to go over the total 67 times (67-81-5).
• The Rockies have a 62-91-0 record ATS this season (covering 40.5% of the time).

Mariners Player Leaders

• Cal Raleigh has 144 hits and an OBP of .361, both of which rank first among Seattle hitters this season. He has a .248 batting average and a slugging percentage of .598.
• Among qualified hitters in the majors, he ranks 95th in batting average, 18th in on-base percentage, and third in slugging.
• Julio Rodriguez has hit 32 homers this season while driving in 95 runs. He's batting .269 this season and slugging .479 with an on-base percentage of .324.
• He ranks 41st in batting average, 83rd in on-base percentage and 32nd in slugging among qualifying hitters.
• Josh Naylor has 157 hits this season and has a slash line of .292/.350/.459.
• Naylor takes a 10-game hitting streak into this game. During his last 10 games he is batting .410 with three doubles, a home run, two walks and 12 RBIs.
• Eugenio Suarez has been key for Seattle with 131 hits, an OBP of .302 plus a slugging percentage of .531.

Rockies Player Leaders

• Hunter Goodman has totaled 145 hits with a .517 slugging percentage, both team-high marks for the Rockies. He's batting .277 and with an on-base percentage of .322.
• Including all qualified hitters in the majors, he ranks 30th in batting average, 91st in on-base percentage and 13th in slugging percentage.
• Mickey Moniak is hitting .270 with 20 doubles, eight triples, 24 home runs and 22 walks. He's slugging .521 with an on-base percentage of .306.
• Jordan Beck a has .324 on-base percentage to pace the Rockies.
• Tyler Freeman is batting .281 with 20 doubles, two triples, two home runs and 34 walks.

Mariners vs Rockies Head to Head

• 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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