Colorado Rockies vs Seattle Mariners Prediction, 9/23/2025 MLB Picks, Best Bets & Odds

Game: Colorado Rockies vs Seattle Mariners

Date: Tuesday, September 23, 2025

Location: T-Mobile Park in Seattle, WA

TV: Root Sports Northwest

Odds/Point Spread: Colorado (+132) Seattle (-160)

The Colorado Rockies (43-113) are hitting the road to T-Mobile Park on Tuesday where they will try to defeat the Seattle Mariners (87-69). The moneyline on this matchup has Colorado at +132 while Seattle is at -160. The total comes in at 8.5. The starting pitchers are McCade Brown and Bryce Miller.

Colorado has a slugging percentage of .389 and have been called out on strikes 1,454 times, while taking a walk on 380 occasions. They have recorded 565 RBI's and 1,242 hits on the campaign, while their team batting average sits at .239. The Rockies have tallied 244 doubles as a team and have smacked 154 baseballs out of the park. They have 581 runs and have an on-base percentage of .295. As a squad, the Colorado Rockies are putting up 3.8 runs/g, which ranks them 29th in baseball.

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The Rockies are sitting with a team earned run average of 6.02 this season (30th in the league), and the staff has rung up 1,034 batters. Rockies pitchers have conceded 239 home runs in addition to 987 runs (30th in the league). They have walked 528 batters and their FIP comes in at 5.23 as a team this year. Colorado has allowed 1,621 hits (10.8 per 9 innings) and also 903 earned runs. They have earned a strikeout to walk ratio of 1.96 and their pitching staff holds a WHIP of 1.59.

Rockies relief pitchers have stepped onto the hill with opponents on base 156 times and also have had 134 appearances in high leverage situations. The relief pitchers have accumulated 56 holds this season (30th in the league). The Rockies relievers have a save percentage of 53.8% and have entered the game in 108 save situations. They have accumulated 28 saves this season and have missed out on 24 out of their 52 save opportunities. The relief pitchers have inherited 267 base runners on the campaign with 34.8% of them earned a run for their team. The Rockies have dispatched 509 relievers to the mound so far this season.

The Cleveland Guardians have amassed 4,051 putouts this year, as well as 1,418 assists and 108 errors. Their fielding rate is at .981 which is 29th in the majors, and they have turned 150 double plays. The Rockies have transformed 65.9% of baseballs in play into outs out of 12,153 innings on the field, which has them ranked 30th in pro baseball.

Brown has taken the hill for 17 innings and has 11 K's in his pro baseball career. His earned run average is 9.42 (18 ER's allowed) and his career WHIP is 2.151. He has surrendered 24 base knocks (12.6 hits per nine innings) with 13 walks. Brown (0-4 win-loss record in his career) sits with a FIP of 9.28 while he has gone up against 93 opposing batters during his time in the major leagues.

The Mariners have a team slugging % of .420 and they tally 4.74 runs per game (11th in MLB). They have hit 224 two-baggers, while walking 523 times as well as notching 734 runs. Seattle is sitting with 228 home runs on the year to go along with 703 RBIs. They have struck out on 1,368 occasions (6th in MLB) and have notched a total of 1,289 base hits. The Seattle Mariners have a team OBP of .320 as well as a batting average of .245 this season.

The Seattle pitching staff have given up 670 runs for the year while holding a team ERA of 3.89 (605 earned runs surrendered). They have surrendered 184 dingers and they surrender 4.31 runs per 9 innings (12th in the league). The Mariners hold a team WHIP of 1.233 with a FIP of 4.01 as a team for the year. Their K/BB ratio comes in at 8.70 (1,356 strikeouts against 440 walks). They come in at 19th in the league as a pitching staff in total hits conceded with 1,285.

Seattle bullpen pitchers have an inherited score rate of 25.0% of 140 inherited runners. Their bullpen pitchers have come in 213 times in high leverage situations in addition to 128 occasions with runners on base. Sitting with 157 save situations, the Mariners have earned 90 holds in addition to 25 blown saves. They sit at 19th in MLB with a save rate of 62.7%, and they have dispatched 527 bullpen pitchers to the hill so far this season. Seattle has had relief pitchers enter the contest in 67 save opportunities and they have come away with 42 saves.

The Seattle Mariners have turned 114 double plays and hold a fielding percentage of .988 (7th in baseball). The Mariners have accrued 1,303 assists, 67 errors and have earned 4,199 putouts over the course of the season. In their 12,597 innings on the field, the Mariners have earned a defensive efficiency of 70.1% (13th in professional baseball).

Thus far in his career, Miller has surrendered 338 hits while he has earned 358 strikeouts in 391 innings pitched. He has allowed a total of 172 earned runs while earning a WHIP of 1.124 and being the owner of a FIP of 3.9. He has a strikeout to walk ratio of 3.51 and he has gone up against 1,592 opposing batters in his pro baseball career. Miller (24-20 win-loss mark in his career) is the owner of a 3.96 ERA and has allowed 7.8 hits per 9 innings.

Who will win tonight's MLB game against the spread or moneyline?

Josh Schonwald's Pick: Take Colorado (+132)

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