- Matchup: Seattle Mariners vs Boston Red Sox
- Date: Wednesday, September 2, 2026
- Venue: Fenway Park, Boston, MA
- Broadcast: NESN
- Betting Odds: Seattle (+126) Boston (-152)
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The Boston Red Sox, currently with a record of 75-63, are set to host the Seattle Mariners, who sit at 64-74, at Fenway Park this Wednesday. The moneyline for this match offers Seattle at +126 and Boston opening at -152. The total runs over/under is established at 8. Scheduled starting pitchers are Bryce Miller and Patrick Sandoval.
This season, the Mariners have recorded 163 doubles and 159 home runs. With a slugging percentage of .374, they have struck out 1,204 times and received 462 walks. Collectively, the Seattle Mariners are averaging 3.9 runs per game, positioning them 30th in MLB. They have tallied 519 RBIs and 1,035 hits, maintaining a batting average of .227. Seattle has scored a total of 538 runs and boasts an on-base percentage of .308.
The Mariners’ pitching staff has an earned run average of 4.18 this season, placing them 18th in the league, and have amassed 1,163 strikeouts. They have allowed 163 home runs and given up 611 runs, ranking 15th in MLB. This season, they’ve walked 364 batters and possess a team FIP of 3.96. Seattle’s pitchers have surrendered 1,155 hits, averaging 8.5 hits per 9 innings, along with 566 earned runs. They have achieved a K/BB ratio of 3.20 and a team WHIP of 1.25.
This year, over 420 relief pitchers have been utilized by the Mariners. The bullpen has inherited 139 runners, with 30.9% scoring. They have recorded 73 holds this season (ranked 18th in MLB). Mariners relievers have faced runners on base 100 times and appeared in 139 high leverage situations. They have accumulated 30 saves, with 23 blown opportunities out of 53 chances. Their save rate stands at 56.6%, having been brought in for 127 save situations.
The Mariners have converted 69.2% of balls in play into outs across 10,956 innings, putting them at 23rd in the majors. Seattle has recorded 3,652 putouts, 1,131 assists, and 71 errors this season. Their fielding percentage stands at .985, ranking 15th in MLB, with 112 double plays logged.
Miller, holding a career record of 28-29, features a FIP of 3.97 and has faced 2,009 hitters during his MLB tenure. He has allowed 425 hits (7.7 hits per nine innings) along with 130 walks. His earned run average is 4.03 (222 earned runs allowed) and his career WHIP is 1.119. Miller has pitched for 496 innings, achieving 456 strikeouts throughout his professional career.
On the other hand, the Red Sox possess a slugging percentage of .405 and score an average of 4.48 runs per contest, ranking 16th in the league. They have connected for 250 doubles, walked 445 times, and compiled 618 runs. Boston has hit 140 home runs and recorded 590 RBIs so far this season. Their strikeout total stands at 1,111 (21st in baseball), with 1,154 hits logged. The Red Sox hold a team on-base percentage of .323, alongside a batting average of .249.
As a collective, the Red Sox’s pitching staff has a WHIP of 1.233 and a FIP of 3.70. They have a K/BB ratio of 8.60 (1,179 strikeouts to 397 walks) and rank 16th in total hits surrendered with 1,116. They’ve allowed 135 home runs while yielding 3.91 runs per nine innings (5th in baseball). This year, Boston’s pitchers have given up 533 runs, achieving an ERA of 3.60 (491 earned runs attributed).
The Red Sox’s relief pitchers have allowed 30.8% of inherited runners to score out of a total of 146 inherited base runners. They have appeared 126 times in high-leverage situations and 110 times with runners on base. With a total of 134 save situations, Boston has achieved 82 holds and suffered 13 blown saves. They currently rank 5th in the league with a save rate of 74.0%, featuring 424 bullpen pitchers used this season.
Boston has turned 100 double plays, maintaining a fielding percentage of .985 (18th in MLB). They have recorded 1,197 assists and 75 errors, achieving a total of 3,682 putouts across 11,046 innings. Their defensive efficiency rests at 69.5%, ranking 21st in professional baseball.
Throughout his MLB career, Sandoval has allowed 565 hits while recording 577 strikeouts in 581 innings. Sandoval (20-48 win-loss) holds a 4.03 ERA while conceding 8.8 hits per nine innings. He has given up 260 earned runs, achieving a WHIP of 1.417 with a FIP of 4.0. His K/BB ratio is 2.24 after facing 2,541 hitters to date.
Which team will triumph in tonight’s MLB game against the spread or on the moneyline?
Prediction: Bet on Boston (-152)
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