Matchup: Seattle Mariners vs. Detroit Tigers
Date: Saturday, July 12, 2025
Venue: Comerica Park, Detroit, MI
Broadcast: FanDuel Sports Network Detroit
Betting Odds: Seattle (+150) Detroit (-182)
The Seattle Mariners (48-45) are set to visit Comerica Park on Saturday as they take on the Detroit Tigers (59-35). The odds for this matchup place the Mariners at +150 while the Tigers open at -182. The over/under for total runs is positioned at 8.5. Anticipated starting pitchers include George Kirby and Casey Mize.

Currently, the Mariners boast a slugging percentage of .407, tallying 820 strikeouts against 314 walks this season. With 403 RBIs and 787 hits, their batting average stands at .246. The Mariners have successfully made 130 doubles and recorded 125 home runs, accumulating 416 runs scored and an on-base percentage of .322. Seattle averages 4.5 runs per game, positioning them 13th in the MLB standings.
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Seattle’s pitching staff holds a K/BB ratio of 2.67 with a collective WHIP of 1.26. The Mariners have surrendered 111 home runs and a total of 405 runs (ranked 18th in the league). They’ve allowed 776 hits (8.3 per nine innings) and earned runs tally up to 365, leading to a team ERA of 3.90 (16th in MLB). They have fanned 766 batters and issued 287 walks, with a FIP of 4.14 this season.
The Mariners’ bullpen has faced runners on base 73 times, with 125 high-leverage appearances to date. Their 44 holds rank them 23rd in baseball, while they maintain a 57.5% save percentage, securing 23 out of 40 save opportunities. Inherited runners have been an issue with the bullpen, allowing 26.9% of 78 inherited runners to score. Throughout the season, they have used 309 relief pitchers.
Defensively, the San Francisco Giants recorded 2,529 putouts, 797 assists, and 36 errors this season, achieving a .989 fielding percentage, placing them 5th in MLB with 74 double plays. The Mariners convert 70.8% of balls in play into outs, ranking them 10th in the majors across 7,587 innings.
George Kirby has logged 560 innings, striking out 534 batters during his professional career. With a career win-loss record of 38-30, he flaunts a FIP of 3.45, having faced 2,276 batters. His earned run average rests at 3.50 after allowing 218 ERs, alongside a WHIP of 1.094 from 540 hits allowed (8.7 hits per 9 innings) and 73 walks.
The Detroit Tigers feature a team OBP of .324 and a batting average of .252. They rank 8th in the league with 815 strikeouts, complementing 801 base hits. This season, they’ve hit 121 home runs and totaled 449 RBIs, achieving a .426 slugging percentage while averaging 4.98 runs per game (6th in the league). With 150 doubles and 306 walks, they have accumulated 468 runs.
The Tigers’ pitching staff maintains a WHIP of 1.201 and a FIP of 3.74 this year. They boast a 8.50 K/BB ratio (793 strikeouts against 267 walks) and rank 8th in hits allowed with 737. They have allowed 94 home runs and give up 3.88 runs per nine innings (4th in baseball), thus yielding a total of 360 runs with a team ERA of 3.46 (321 earned runs).
Detroit’s bullpen has encountered 92 save situations, claiming 50 holds and blowing 12 saves thus far. In 39 save opportunities, the relievers have recorded 27 saves and have entered 81 times in high-pressure scenarios, handling 105 instances with runners on base. Their inherited runner score rate stands at 24.8% across 141 inherited runners, placing them 7th in MLB with a 69.2% save ratio, having utilized 289 relievers throughout the season.
On the defensive front, the Detroit Tigers have made 77 double plays and posted a fielding percentage of .987, ranking 9th in professional baseball. This season, they have 809 assists, 43 errors, and a total of 2,509 putouts. From their 7,527 innings played, they maintain a defensive efficiency of 70.6% (12th in MLB).
Casey Mize (career record of 18-21) offers a 3.97 ERA while allowing 8.9 hits per nine innings. His K/BB ratio stands at 2.82 after facing 1,595 batters, allowing 166 earned runs with a WHIP of 1.273 and a FIP of 3.9. Over his MLB career, Mize has permitted 373 hits and recorded 299 strikeouts over 376 frames.
Which team will emerge victorious in tonight’s MLB encounter, covering the spread or clinching the moneyline?
Josh Schonwald’s Prediction: Opt for Detroit (-182)
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