- Matchup: Seattle Mariners vs Boston Red Sox
- Event Date: Monday, August 31, 2026
- Venue: Fenway Park, Boston, MA
- Broadcast: NESN
- Betting Odds: Seattle (+120) Boston (-144)
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The Seattle Mariners (64-71) are set to visit Fenway Park this Monday to face off against the Boston Red Sox (73-61). Currently, the moneyline reflects the Mariners at +120, while the Red Sox are listed at -144. The total runs for the game are projected at 8, with George Kirby and Payton Tolle expected to take the mound as starting pitchers.
This season, the Mariners have a slugging percentage of .374 and have been struck out 1,168 times, while also drawing 454 walks. They have accumulated 508 RBIs and 1,017 hits, with an overall batting average of .228. With 159 doubles and 156 home runs recorded, the Mariners have scored a total of 527 runs and maintain a .309 on-base percentage. On average, Seattle scores 3.9 runs per game, ranking them 30th in the league.
The Mariners possess a strikeout-to-walk ratio of 3.29, and their pitching staff holds a combined WHIP of 1.24. They have surrendered 159 home runs and 591 runs this season (13th in MLB). With a total of 1,129 hits allowed (averaging 8.5 hits per 9 innings) and 547 earned runs, their earned run average sits at 4.13 (15th in the league), having struck out 1,146 batters. They’ve also issued 348 walks and have a team FIP of 3.92.
This season, Mariners bullpen pitchers have faced runners on base 96 times and have appeared in high-leverage situations 134 times. The relief team has achieved 70 holds (16th in MLB) and has a save percentage of 58.8%. Out of 122 save opportunities, they have successfully converted 30 saves but have blown 21. The bullpen has inherited 134 base runners, with 30.6% of them scoring. The Mariners have utilized 409 relief pitchers so far.
With a total of 3,576 putouts, 1,106 assists, and 70 errors, the Mariners have a fielding percentage of .985, ranking them 16th in MLB. They have successfully completed 111 double plays and converted 69.1% of balls in play into outs across 10,728 innings, putting them 24th in the league.
George Kirby has pitched 784 innings in his career, achieving 747 strikeouts. His earned run average stands at 3.67 (with 320 earned runs), and his WHIP is 1.155. He has conceded 779 hits (averaging 8.9 hits per 9 innings) while issuing 127 walks. Kirby owns a career record of 54-44 with a FIP of 3.62, having faced 3,218 batters.
The Boston Red Sox boast a team slugging percentage of .404, averaging 4.48 runs per game (15th in the league). They have hit 243 doubles, drawn 434 walks, and scored 600 runs overall. With 136 home runs and 573 RBIs for the season, they have struck out 1,080 times (22nd in MLB) and recorded 1,120 hits. The Red Sox have an OBP of .324 and a batting average of .249.
As a pitching staff, the Red Sox have a WHIP of 1.221 and a FIP of 3.65. They rank 10th in the league for total hits allowed, giving up 1,070. The Boston pitchers have allowed 500 runs this season with an ERA of 3.46 (458 earned runs surrendered). Their strikeout-to-walk ratio stands at 8.70 (1,150 strikeouts vs. 386 walks), and they have given up 128 home runs, averaging 3.77 runs per 9 innings (3rd in MLB).
The bullpen for the Red Sox has inherited runners 141 times, with a scoring percentage of 29.8%. Their relief pitchers have made 123 appearances in situations of high leverage, including 104 times with runners on base. This season, the Red Sox have recorded 80 holds, along with 12 blown saves, resulting in a save percentage of 75.5%. They have used 412 bullpen pitchers to date.
Defensively, the Red Sox have executed 97 double plays and maintain a fielding percentage of .985, putting them 18th in MLB. They have logged 1,162 assists, 72 errors, and accumulated 3,577 putouts throughout the season. Their defensive efficiency stands at 69.7% over the 10,731 innings played, ranking 18th in professional baseball.
Payton Tolle, in his career, has allowed 119 hits across 141 innings, striking out 160 batters. Tolle holds an 8-7 career record and has a 3.44 ERA, yielding 7.6 hits per nine innings. He has surrendered 54 earned runs, maintaining a WHIP of 1.147 and a FIP of 3.4, with a strikeout-to-walk ratio of 3.72, facing 579 opponents throughout his career.
Who will take home the win in tonight’s MLB encounter against the spread or moneyline?
Pick: Back Seattle (+120)
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