Mariners vs Rockies Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 23

Odds updated as of 10:12 a.m.

The MLB schedule on Tuesday includes the Seattle Mariners taking on the Colorado Rockies.

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

Mariners vs Rockies Game Info

• Seattle Mariners (87-69) vs. Colorado Rockies (43-113)
• Date: Tuesday, September 23, 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: (-255) | COL: (+210)
• Spread: SEA: -1.5 (-110) | COL: +1.5 (-110)
• Total: 8 -- Over: (-110) | Under: (-110)

Mariners vs Rockies Probable Starting Pitchers

Probable Pitchers: TBA (Mariners) vs TBA (Rockies)

As of this writing, neither team has named a starting pitcher for this contest.

Mariners vs Rockies Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (67.9%)

Mariners vs Rockies Moneyline

• Looking at the moneyline for Rockies-Mariners, Colorado is the underdog at +210, and Seattle is -255 playing at home.

Mariners vs Rockies Spread

• The Rockies are at the Mariners, and are +1.5 on the runline. The Rockies are -110 to cover the spread, and the Mariners are -110.

Mariners vs Rockies Over/Under

• A total of 8 runs has been set for the Mariners-Rockies game on Sept. 23, 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 come away with 63 wins in the 106 contests they have been listed as the favorites in this season.
• This season Seattle has come away with a win two times in three chances when named as a favorite of at least -255 on the moneyline.
• The Mariners' games have gone over the total in 82 of their 151 opportunities.
• The Mariners have posted a record of 68-83-0 against the spread this season.
• The Rockies have gone 38-108 in games they were the underdog on the moneyline (winning 26% of those games).
• Colorado has gone 10-44 when playing as a moneyline underdog with odds of +210 or longer (18.5%).
• The Rockies have had an over/under set by oddsmakers 151 times, and have combined with opponents to go over the total in 66 of those games (66-80-5).
• The Rockies have gone 61-90-0 against the spread this season.

Mariners Player Leaders

• Cal Raleigh leads Seattle with 141 hits and an OBP of .360 this season. He has a .247 batting average and a slugging percentage of .589.
• Among qualified hitters in the majors, his batting average ranks 96th, his on-base percentage ranks 19th, and he is third in slugging.
• Raleigh hopes to build on a two-game hitting streak in this matchup. During his last five outings he is batting .222 with two home runs, three walks and three RBIs.
• Julio Rodriguez has an OPS of .796, fueled by an OBP of .321 and a team-best slugging percentage of .476 this season. He's batting .268.
• Among all qualifying players, he ranks 41st in batting average, 88th in on-base percentage and 34th in slugging percentage.
• Rodriguez enters this game looking to extend his three-game hit streak. During his last five outings he is hitting .200 with a home run, a walk and an RBI.
• Josh Naylor is batting .291 with a .458 slugging percentage and 88 RBI this year.
• Naylor heads into this game with eight games in a row with at least one hit. During his last 10 games he is hitting .341 with two doubles, a home run, three walks and eight RBIs.
• Eugenio Suarez has been key for Seattle with 130 hits, an OBP of .304 plus a slugging percentage of .531.
• Suarez has hit safely in three straight games. During his last five outings he is hitting .444 with three doubles, two home runs, two walks and four RBIs.

Rockies Player Leaders

• Hunter Goodman has racked up 144 hits with a .523 slugging percentage, both team-best numbers for the Rockies. He's batting .279 and with an on-base percentage of .325.
• Including all the qualifying hitters in the big leagues, he ranks 25th in batting average, 80th in on-base percentage and 12th in slugging percentage.
• Mickey Moniak is hitting .270 with 18 doubles, eight triples, 24 home runs and 22 walks. He's slugging .521 with an on-base percentage of .307.
• Jordan Beck has put up a team-best .326 on-base percentage.
• Tyler Freeman is hitting .281 with 20 doubles, two triples, two home runs and 34 walks.

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