Mariners vs Rockies Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 24

Odds updated as of 9:12 p.m.

The MLB slate on Wednesday includes the Seattle Mariners taking on the Colorado Rockies.

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

Mariners vs Rockies Game Info

• Seattle Mariners (88-69) vs. Colorado Rockies (43-114)
• Date: Wednesday, September 24, 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: (-300) | COL: (+245)
• Spread: SEA: -1.5 (-137) | COL: +1.5 (+114)
• Total: 7.5 -- Over: (-108) | Under: (-112)

Mariners vs Rockies Probable Starting Pitchers

Probable Pitchers: Luis Castillo (Mariners) - 10-8, 3.63 ERA vs Tanner Gordon (Rockies) - 6-7, 6.00 ERA

The Mariners will look to Luis Castillo (10-8) versus the Rockies and Tanner Gordon (6-7). Castillo and his team are 14-17-0 ATS this season when he starts. Castillo's team has won 58.3% of his starts when they are favored on the moneyline (14-10). The Rockies have an 8-5-0 record against the spread in Gordon's starts. The Rockies have a 7-6 record in Gordon's 13 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 (70.2%)

Mariners vs Rockies Moneyline

• Seattle is the favorite, -300 on the moneyline, while Colorado is a +245 underdog on the road.

Mariners vs Rockies Spread

• The Rockies are at +1.5 on the runline against the Mariners. The Rockies are +114 to cover the spread, and the Mariners are -137.

Mariners vs Rockies Over/Under

• Mariners versus Rockies on Sept. 24 has an over/under of 7.5 runs, with the odds on the over -108 and the under set at -112.

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

Mariners vs Rockies Betting Trends

• The Mariners have been victorious in 64, or 59.8%, of the 107 contests they have been chosen as favorites in this season.
• Seattle has been listed as a favorite of -300 or more on two occasions this season and split those games.
• Contests with the Mariners have gone over the total set by sportsbooks in 82 of 152 chances this season.
• The Mariners are 68-84-0 against the spread in their 152 games with a line set by sportsbooks this season.
• The Rockies have gone 38-109 in games they were the underdog on the moneyline (winning 25.9% of those games).
• In games it has played as a moneyline underdog with odds of +245 or longer, Colorado has a 4-23 record (winning just 14.8% of its games).
• The Rockies have combined with opponents to hit the over on the total 66 times this season for a 66-81-5 record against the over/under.
• The Rockies have gone 62-90-0 against the spread this season.

Mariners Player Leaders

• Cal Raleigh has 141 hits and an OBP of .359, both of which are tops among Seattle hitters this season. He has a .245 batting average and a slugging percentage of .586.
• Among qualifying hitters in MLB, he ranks 100th in batting average, 21st in on-base percentage, and third in slugging.
• Julio Rodriguez has an OPS of .796, fueled by an OBP of .322 and a team-best slugging percentage of .474 this season. He's batting .268.
• He is 41st in batting average, 90th in on-base percentage and 36th in slugging among qualified hitters.
• Josh Naylor is batting .292 with a .461 slugging percentage and 91 RBI this year.
• Naylor brings a nine-game hitting streak into this game. In his last 10 games he is batting .375 with three doubles, a home run, two walks and 11 RBIs.
• Eugenio Suarez has 47 home runs, 113 RBI and a batting average of .229 this season.

Rockies Player Leaders

• Hunter Goodman has racked up a slugging percentage of .521 and has 145 hits, both team-best figures for the Rockies. He's batting .279 and with an on-base percentage of .324.
• Including all qualifying hitters, he is 25th in batting average, while his on-base percentage ranks 82nd and he is 12th in slugging.
• Mickey Moniak is hitting .270 with 19 doubles, eight triples, 24 home runs and 22 walks. He's slugging .521 with an on-base percentage of .307.
• Jordan Beck has racked up an on-base percentage of .326, a team-best for the Rockies.
• Tyler Freeman is batting .281 with 20 doubles, two triples, two home runs and 34 walks.

Mariners vs Rockies Head to Head

• 9/23/2025: 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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