- Matchup: Boston Red Sox vs Seattle Mariners
- Match Date: Friday, June 19, 2026
- Venue: T-Mobile Park, Seattle, WA
- Broadcast: MLB.TV
- Betting Odds: Boston (+162) Seattle (-196)
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T-Mobile Park will host the Seattle Mariners (38-37) as they go head-to-head with the Boston Red Sox (29-43) this Friday. The betting odds position the Red Sox at +162 while the Mariners have the line at -196. The total runs over/under is set at 8.5, with Ranger Suarez and Luis Castillo slated to pitch in this matchup.
This season, the Boston Red Sox are averaging 3.9 runs per game, placing them 29th in Major League Baseball. They have recorded a total of 279 runs and a team on-base percentage of .314. The Red Sox have achieved 124 doubles and hit 59 home runs, totaling 268 RBIs and 586 hits, resulting in a batting average of .245. Their slugging percentage stands at .381, with 587 strikeouts compared to 209 walks.
The Red Sox pitching staff holds a K/BB ratio of 2.78, with a combined WHIP of 1.28. Boston pitchers have allowed 78 home runs and a total of 291 runs this season (6th in the league). They have yielded 588 hits (approximately 8.5 hits per 9 innings) and 273 earned runs, giving the Red Sox a team ERA of 3.92 (10th in the league) and striking out 598 batters. Their pitching unit has issued 215 walks, resulting in a FIP of 3.98 for the season.
The Boston bullpen boasts a save rate of 71.4%, entering 56 save scenarios, converting 15 saves, and failing 6 times in 21 opportunities. Relief pitchers have inherited 86 runners, with 32.6% of those scoring. This season, Red Sox relievers have entered games 59 times with opposing players on base and have appeared in 59 high-leverage spots. They have sent 218 different relievers to the mound, achieving 34 holds (20th in MLB).
Boston converts 69.5% of balls in play into outs across 5,637 innings, which ranks them 22nd in the league. The team has accumulated 1,879 putouts, 595 assists, and committed 34 errors, maintaining a fielding percentage of .986, which is 16th in MLB, and have turned 44 double plays.
Suarez has pitched 832 innings, striking out a total of 775 batters throughout his career. His earned run average is 3.36 (with 311 earned runs allowed) and a WHIP of 1.262, allowing 789 base hits (8.5 hits per nine innings) alongside 261 walks. Suarez, with a record of 55-40, has a FIP of 3.31, having faced 3,483 batters in the majors.
The Mariners have a slugging percentage of .396, averaging 4.23 runs per game (19th in MLB). They have 96 doubles, 255 walks, and 317 total runs this season. With 96 home runs and 308 RBIs they have also struck out 637 times (10th in the league) and have recorded 591 hits. The Seattle Mariners possess an on-base percentage of .317 and a batting average of .236 in this campaign.
The Mariners’ pitching staff maintains a team WHIP of 1.192, with a FIP of 3.64. They rank 17th in the league for total hits allowed, with 602. This season, Seattle’s pitchers have given up 297 runs with a team ERA of 3.67 (272 earned runs allowed). They have a strikeout-to-walk ratio of 8.70 (646 strikeouts to 193 walks), surrendering 74 home runs while allowing 4.01 runs per 9 innings (5th in MLB).
The Seattle bullpen has an inherited scoring rate of 21.1% from 76 inherited base runners, with 85 high-leverage appearances and 57 situations with runners on base. Converting 41 holds and 13 blown saves across 72 save opportunities, they rank 22nd in save rate at 56.7%, deploying 228 different bullpen pitchers throughout the season.
Over 6,003 innings, the Mariners have a defensive efficiency of 69.7% (18th in MLB). They have 69 double plays, maintaining a fielding percentage of .988 (12th in professional baseball), with 606 assists, 33 errors, and 2,001 putouts so far this season.
In his professional career, Castillo has allowed 1,275 hits while recording 1,558 strikeouts over 1,476 innings pitched. With an 86-90 career record and a 3.62 ERA, he has permitted 7.8 hits per 9 innings while allowing a total of 594 earned runs, holding a WHIP of 1.187 and a FIP of 3.6. His K/BB ratio is 3.26, having faced 6,122 batters in his career.
Who do you think will win tonight’s MLB game against the spread or moneyline?
Prediction: Choose Seattle (-196)
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