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

Odds updated as of 6:12 a.m.

The Seattle Mariners versus the Colorado Rockies is on the MLB schedule for Wednesday.

Here's everything you need to know before checking out today's 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: (-320) | COL: (+260)
• Spread: SEA: -1.5 (-142) | COL: +1.5 (+118)
• Total: 7.5 -- Over: (-110) | Under: (-110)

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 probable starters are Luis Castillo (10-8) for the Mariners and Tanner Gordon (6-7) for the Rockies. Castillo's team is 14-17-0 against the spread in his starts this season. Castillo's team is 14-10 this season when he starts and they are the moneyline favorite. The Rockies are 8-5-0 ATS in Gordon's 13 starts that had a set spread. The Rockies have been the moneyline underdog in 13 of Gordon's starts this season, and they went 7-6 in those games.

Mariners vs Rockies Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (69.9%)

Mariners vs Rockies Moneyline

• Looking at the moneyline for Mariners-Rockies, Seattle is the favorite at -320, and Colorado is +260 playing on the road.

Mariners vs Rockies Spread

• The Mariners are favored by 1.5 runs at home versus the Rockies. The Mariners are -142 to cover the spread, while the Rockies are +118.

Mariners vs Rockies Over/Under

• A total of 7.5 runs has been set for the Mariners-Rockies contest on Sept. 24, with the over available 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 been chosen as favorites in 107 games this year and have walked away with the win 64 times (59.8%) in those games.
• Seattle has played as a favorite of -320 or more just one time this year and came away with a loss in that game.
• The Mariners and their opponents have gone over in 82 of their 152 games with a total set by sportsbooks this season.
• In 152 games with a line this season, the Mariners have a mark of 68-84-0 against the spread.
• The Rockies have won 38 of the 147 games they were listed as the moneyline underdog this season (25.9%).
• Colorado has gone 3-17 when playing as a moneyline underdog with odds of +260 or longer (15%).
• 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 ATS this season.

Mariners Player Leaders

• Cal Raleigh has 141 hits and an OBP of .359, both of which lead Seattle hitters this season. He has a .245 batting average and a slugging percentage of .586.
• Among all qualified hitters in MLB, his batting average ranks 100th, his on-base percentage ranks 21st, and he is 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.
• Among all qualifying players, he is 41st in batting average, 89th in on-base percentage and 35th in slugging percentage.
• Josh Naylor has collected 156 base hits, an OBP of .351 and a slugging percentage of .461 this season.
• Naylor enters this game with nine games in a row with at least one hit. In his last 10 games he is batting .375 with three doubles, a home run, two walks and 11 RBIs.
• Eugenio Suarez has been key for Seattle with 130 hits, an OBP of .302 plus a slugging percentage of .527.

Rockies Player Leaders

• Hunter Goodman has a team-high slugging percentage (.521) while leading the Rockies in hits (145). He's batting .279 and with an on-base percentage of .324.
• Including all the qualifying hitters in the big leagues, he ranks 25th in batting average, 82nd in on-base percentage and 12th in slugging percentage.
• Mickey Moniak is batting .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 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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