Seattle Mariners vs Detroit Tigers Prediction, 7/12/2025 MLB Picks, Best Bets & Odds
Game: Seattle Mariners vs Detroit Tigers
Date: Saturday, July 12, 2025
Location: Comerica Park in Detroit, MI
TV: FanDuel Sports Network Detroit
Odds/Point Spread: Seattle (+150) Detroit (-182)
The Seattle Mariners (48-45) are en route to Comerica Park on Saturday where they will try to beat the Detroit Tigers (59-35). The moneyline on this game has the Mariners at +150 while the Tigers open at -182. The total is set at 8.5. The expected starting pitchers will be George Kirby and Casey Mize.


Seattle has a slugging % of .407 and have struck out 820 times, while drawing a walk on 314 occasions. They have 403 runs batted in and 787 base knocks for the year, and their team batting average comes in at .246. The Mariners have tallied 130 two-baggers as a unit and have hit 125 baseballs out of the park. They have earned 416 runs scored while having a team on-base percentage of .322. As a unit, the Seattle Mariners are scoring 4.5 runs per game, which has them sitting at 13th in MLB.
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They have a K/BB ratio of 2.67 and their pitching staff has earned a collective WHIP of 1.26. Mariners pitchers have relinquished 111 home runs in addition to 405 total runs (18th in the league). Seattle has given up 776 base hits (8.3 per 9 innings) and 365 earned runs. The Mariners hold a team ERA of 3.90 this year (16th in the league), and the staff has rung up 766 hitters. They have walked 287 players from the other team and their FIP comes in at 4.14 as a unit this year.
Mariners relief pitchers have stepped onto the hill with runners on base 73 times in addition to having 125 appearances in high leverage situations. The relief pitchers are sitting with 44 holds this season (23rd in baseball). The Mariners bullpen have accumulated a save percentage of 57.5% and have come into the game in 84 save situations. They have earned 23 saves for the season and have blown 17 out of their 40 chances to get a save. The bullpen pitchers have inherited 78 base runners on the season with 26.9% of those players crossed the plate. The Mariners have sent 309 relievers to the hill over the course of the season.
The San Francisco Giants have accounted for 2,529 putouts this season, as well as 797 assists and 36 errors. Their fielding percentage is at .989 which ranks 5th in MLB, and have 74 double plays. The Mariners have converted 70.8% of balls in play into outs out of their 7,587 innings, which has them sitting 10th in the majors.
Kirby has taken the ball for 560 innings and is sitting with 534 strikeouts so far in his pro baseball career. Kirby (38-30 career win-loss record) holds a FIP of 3.45 and he has faced 2,276 opposing batters in the major leagues. His earned run average is 3.50 (218 ER's allowed) and his career WHIP is 1.094. He has surrendered 540 base knocks (8.7 hits per 9 innings) and has 73 walks.
The Detroit Tigers have accounted for a team OBP of .324 as well as a team batting average of .252 so far this year. They have been called out on strikes on 815 instances (8th in the league) and have accounted for 801 base hits. Detroit has compiled 121 long balls so far this season as well as 449 RBIs. The Tigers have a team SLG% of .426 and they average 4.98 runs per outing (6th in the league). They have recorded 150 doubles, while taking a walk 306 times as well as earning 468 runs.
The Tigers hold a team WHIP of 1.201 in addition to having a FIP of 3.74 as a team on the campaign. They currently have a strikeout to walk ratio of 8.50 (793 strikeouts vs 267 free passes). They sit at 8th in baseball as a staff in total hits surrendered with 737. They have conceded 94 long balls and they give up 3.88 runs per 9 innings (4th in baseball). The Detroit pitching staff have surrendered 360 runs for the season while holding a team ERA of 3.46 (321 earned runs relinquished).
Sitting with 92 save situations, the Tigers have earned 50 holds in addition to 12 blown saves. Detroit has called on bullpen pitchers to enter the contest in 39 save chances and they have recorded 27 saves. Their bullpen pitchers have come in 81 times in high leverage situations and also on 105 occasions with runners on. Detroit relievers hold an inherited score rate of 24.8% of 141 inherited runners. They are currently ranked 7th in MLB with a save rate of 69.2%, and they have dispatched 289 bullpen pitchers to the mound for the year.
The Detroit Tigers have gotten 77 double plays and own a fielding percentage of .987 (9th in professional baseball). The Tigers have 809 assists, 43 errors and have accumulated 2,509 putouts for the season. Out of their 7,527 innings played, the Tigers hold a efficiency on defense of 70.6% (12th in MLB).
Mize (18-21 career record) has earned a 3.97 earned run average while giving up 8.9 hits per nine innings. He has a K/BB ratio of 2.82 and he has faced 1,595 batters so far in his career. He has given up 166 ER's while earning a WHIP of 1.273 and being the owner of a FIP of 3.9. In his MLB career, Mize has allowed 373 base knocks while he has earned 299 punch outs in 376 frames.
Who will win tonight's MLB game against the spread or moneyline?
Josh Schonwald's Pick: Take Detroit (-182)
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Additional Resources:
Detroit Tigers - Twitter
Seattle Mariners - Twitter