Seattle Mariners vs Colorado Rockies Prediction, 9/18/2026 MLB Picks, Best Bets & Odds

Game: Seattle Mariners vs Colorado Rockies

Date: Friday, September 18, 2026

Location: Coors Field in Denver, CO

TV: Rockies.TV

Odds/Point Spread: Seattle (-144) Colorado (+120)

The Seattle Mariners (71-82) are en route to Coors Field on Friday where they will take on the Colorado Rockies (56-96). The moneyline on this matchup has the Mariners at -144 and the Rockies are priced at +120. The betting total comes in at 9. The men taking the mound will be Bryan Woo and Ryan Feltner.

Seattle owns a slugging percentage of .380 and have struck out 1,329 times, while taking a walk on 519 occasions. They have accumulated 601 RBI's and 1,181 hits on the campaign, while their batting average is at .232. The Mariners have recorded 191 doubles as a squad and have hit 175 balls out of the park. They have accounted for 624 runs and hold an on-base percentage of .312. As a team, the Seattle Mariners are putting up 4.1 runs per outing, which puts them at 28th in MLB.

Get all of our MLB Expert Picks

Their K/BB ratio is 3.19 and the pitching staff has earned a collective WHIP of 1.26. Mariners pitchers have surrendered 186 long balls and 680 runs (17th in the league). Seattle has given up 1,289 base hits (8.6 per 9 innings) and 631 earned runs. The Mariners have an earned run average of 4.21 on the season (20th in the league), and the staff has rung up 1,301 hitters. They have walked 408 opposing players and their FIP sits at 4.02 as a team this season.

Mariners pitchers have entered the contest with runners on base 116 times and also have had 151 appearances in high leverage situations. The relievers have tallied 77 holds on the campaign (21st in MLB). The Mariners bullpen have recorded a save percentage of 55.9% and have entered the game in 137 save situations. They have accumulated 33 saves on the season and have missed out on 26 of their 59 chances to get a save. The bullpen pitchers have inherited 162 base runners so far this season with 31.5% of them earned a run for their team. The Mariners have dispatched 470 relief pitchers to the hill this season.

The Mariners have turned 69.0% of balls hit into play into outs out of 12,144 innings on the field, ranking them 24th in pro baseball. The Seattle Mariners have earned 4,048 putouts thus far, in addition to 1,261 assists and 79 errors. Their fielding percentage is holding steady at .985 which has them ranked 16th in the majors, and have 121 double plays.

Woo (40-24 mark in his career) is the owner of a FIP of 3.36 and he has gone up against 2,231 opposing batters in the majors. He has given up 443 hits (7.2 hits per nine innings) with 115 free passes. His ERA is 3.41 (211 earned runs allowed) and he has a WHIP of 1.001. Woo has thrown 557 innings and has accounted for 555 strikeouts in his pro baseball career.

The Rockies hold a slugging percentage of .418 and they earn 4.70 runs per contest (6th in MLB). They have put up 272 doubles, while getting a free base 479 times and putting up 715 runs. Colorado has recorded 169 home runs on the campaign to go along with 685 RBIs. They have struck out on 1,321 occasions (8th in the league) and have tallied 1,313 hits. The Colorado Rockies have recorded a team OBP of .324 in addition to a batting average of .254 on the year.

The Colorado pitching staff have allowed 885 runs this year and come in with a team ERA of 5.60 (829 earned runs relinquished). They have surrendered 210 homers and they allow 5.97 runs per 9 innings (30th in baseball). The Rockies hold a team WHIP of 1.532 and have a FIP of 4.86 as a team for the season. Their K/BB ratio comes in at 7.00 (1,040 strikeouts vs 509 free passes). They rank 30th in the league as a pitching staff in total hits conceded with 1,534.

They rank 22nd in the league with a save percentage of 57.1%, and they have sent 470 relievers to the mound on the year. Their relief pitchers have stepped onto the mound 144 times in high leverage situations and on 154 occasions with runners on base. Sitting with 120 save situations, the Rockies have earned 60 holds and 24 blown saves. Colorado has had relief pitchers step onto the hill in 56 save opportunities and they have earned 32 saves. Colorado relief pitchers hold an inherited score rate of 32.1% out of 237 inherited runners.

In 12,003 innings on the field, the Rockies are sitting with a efficiency on defense of 66.8% (30th in pro baseball). The Colorado Rockies have gotten 122 double plays and have a fielding percentage of .982 (27th in pro baseball). The Rockies have accrued 1,271 assists, 94 errors and have notched a total of 4,001 putouts for the season.

Thus far in his career, Feltner has allowed 482 base hits while he has tallied 379 punch outs in 455 innings pitched. Feltner (15-36 mark in his career) is the owner of a 5.32 earned run average and has conceded 9.5 hits per nine innings. He has given up a total of 269 ER's while earning a WHIP of 1.458 and a FIP of 5.2. He has a K/BB ratio of 2.08 and he has gone up against 2,007 opposing hitters during his MLB career.

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

Josh Schonwald's Pick: Take Seattle (-144)

Get $60 worth of FREE premium member picks. No Obligation. No Salesman. No Credit Card. Fast Sign up with Instant Access Click Here

Get MLB picks on every single game, or if you want our very best bets by the experts, sign up for your free $60 account with a guarantee.