Boston Red Sox vs Seattle Mariners Prediction, 6/18/2025 MLB Picks, Best Bets & Odds

Game: Boston Red Sox vs Seattle Mariners

Date: Wednesday, June 18, 2025

Location: T-Mobile Park in Seattle, WA

TV: Root Sports Northwest

Odds/Point Spread: Boston (-132) Seattle (+110)

The Seattle Mariners (36-35) are hosting the Boston Red Sox (38-36) at T-Mobile Park on Wednesday. The line on this contest has Boston at -132 while Seattle is at +110. The betting total comes in at 8. The pitchers who are expected to start are Garrett Crochet and Luis Castillo.

Boston is slugging .421 and have struck out 687 times, while being walked on 256 occasions. They have accumulated 340 RBI's in addition to 646 base knocks for the year, while their batting average comes in at .252. The Red Sox have tallied 141 two-baggers as a squad and have hit 90 balls out of the stadium. They have accumulated 355 runs scored while holding a team OBP of .326. As a team, the Boston Red Sox are putting up 4.8 runs/g, which puts them at 6th in MLB.

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They have accrued a K/BB ratio of 2.57 and the pitching staff holds a collective WHIP of 1.31. Red Sox pitchers have allowed 71 home runs in addition to 331 runs in total (22nd in baseball). Boston has given up 630 base hits (8.5 per 9 innings) and 290 earned runs. The Red Sox have a team earned run average of 3.91 over the course of the season (17th in the league), and they have rung up 629 hitters. Their pitching staff has walked 245 players from the other team and their FIP is 3.81 as a squad over the course of the season.

The Red Sox have dispatched 242 relievers to the hill so far this season. The relief pitchers have inherited 96 runners for the year and 31.3% of those runners crossed home plate. They have accumulated 20 saves over the course of the season and have blown 14 of 34 chances to get a save. The Red Sox bullpen have earned a save percentage of 58.8% and have entered the game in 72 save situations. The relievers have 36 holds for the year (22nd in the league). Red Sox pitchers have entered the game with players on base 73 times in addition to having 97 appearances in high leverage situations.

The Baltimore Orioles have notched a total of 2,002 putouts this year, in addition to 676 assists and 64 errors. Their fielding rate is at .977 which has them sitting 29th in baseball, and have accumulated 67 double plays. The Red Sox have turned 67.9% of baseballs in play into outs in their 6,006 innings, which has them sitting 26th in pro baseball.

Crochet has pitched in 315 innings and has earned 411 strikeouts so far in his career. His earned run average is 2.97 (104 earned runs allowed) and his career WHIP is 1.117. He has surrendered 251 base hits (7.2 hits per nine innings) and has 101 free passes. Crochet (15-23 win-loss mark in his career) has a FIP of 2.93 while he has gone up against 1,293 hitters during his time in the majors.

The Seattle Mariners have tallied a team OBP of .322 as well as a batting average of .242 so far this season. They have struck out on 633 instances (5th in MLB) and have accounted for 585 base knocks. Seattle has compiled 90 long balls over the course of the season as well as 298 runs batted in. The Mariners have a team SLG% of .395 and they tally 4.34 runs per game (12th in the league). They have recorded 93 two-baggers, while walking 258 times as well as putting up 308 runs.

The Seattle pitching staff have conceded 312 runs this year while holding an ERA of 3.93 (281 earned runs surrendered). They have surrendered 82 homers and they relinquish 4.37 runs per 9 innings (18th in baseball). The Mariners hold a team WHIP of 1.305 and have a FIP of 4.07 as a team so far this season. They currently have a strikeout to walk ratio of 8.10 (579 strikeouts vs 219 walks). They sit at 22nd in MLB as a staff in total hits relinquished with 620.

Seattle relievers have an inherited score percentage of 25.4% out of their 59 inherited base runners. Their relief pitchers have come in 96 times in high leverage situations and on 52 occasions with base runners. Sitting with 65 save situations, the Mariners have compiled 34 holds in addition to 12 blown saves. They are ranked 19th in baseball holding a save percentage of 61.3%, and they have sent 240 relief pitchers to the hill for the season. Seattle has called on bullpen pitchers to step onto the hill in 31 save chances and they have earned 19 saves.

Out of their 5,787 innings on the field, the Mariners have accumulated a defensive efficiency of 69.5% (19th in the majors). The Seattle Mariners have gotten 62 double plays and have a fielding percentage of .989 (4th in professional baseball). The Mariners have accrued 619 assists, 28 errors and have notched a total of 1,929 putouts during this campaign.

Castillo (77-80 career win-loss record) is the owner of a 3.54 earned run average while giving up 7.7 hits per 9 innings. He has a K/BB ratio of 3.23 and he has faced 5,414 hitters during his MLB career. He has given up a total of 515 ER's while holding a WHIP of 1.182 and a FIP of 3.5. In his MLB career, Castillo has surrendered 1,115 base hits while he has totaled 1,398 punch outs in 1,309 innings.

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

Tony Sink's Pick: Take Boston (-132)

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