- Matchup: Detroit Tigers vs Seattle Mariners
- Date: Saturday, October 4, 2025
- Venue: T-Mobile Park, Seattle, WA
- Broadcast: FS1
- Betting Odds: Detroit (+185) Seattle (-225)
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The Seattle Mariners (90-72) will host the Detroit Tigers (87-75) at T-Mobile Park this Saturday for Game 1 of the ALDS. The moneyline odds show Detroit at +185, while Seattle comes in at -225. The over/under is set at 7 runs, with pitchers Keider Montero and Luis Castillo expected to take the mound.
The Detroit Tigers have a slugging percentage of .413 and have recorded 1,454 strikeouts while achieving 511 walks. They have amassed 724 RBIs and 1,346 hits this season, resulting in a .247 batting average. As a team, they have hit 244 doubles and 198 home runs, scoring a total of 758 runs with an on-base percentage of .316. With an output of 4.7 runs per game, the Tigers currently rank 11th in Major League Baseball.
Detroit’s strikeout-to-walk ratio is at 2.84, with a pitching staff WHIP of 1.25. The Tigers’ pitchers have given up 187 home runs and 691 runs (16th in MLB). They allowed 1,309 hits (averaging 8.2 hits per 9 innings) and 630 earned runs. The team’s earned run average is 3.95, placing them 16th in the league, with a total of 1,375 strikeouts recorded. They have issued 485 walks, and their FIP sits at 4.05 for the year.
Tigers relievers boast a save rate of 64.5% from 142 save opportunities. They’ve faced 258 inherited runners, with 28.7% of those scoring. The bullpen has been utilized 182 times with players on base and has played in 140 high-leverage situations, with 508 relief appearances this season. The relief corps has made 75 holds (ranking 26th in MLB) and converted 40 saves out of 62 chances.
The Tigers have successfully converted 70.2% of balls hit into play to outs over 12,927 innings played, placing them 13th in MLB. The Colorado Rockies have made 4,309 putouts with 1,379 assists and committed 79 errors. Their fielding percentage stands at .986, ranking 14th in baseball, along with 128 double plays turned.
Montero has pitched 188 innings and accumulated 149 strikeouts during his career. With an 11-9 career record, his FIP is 4.52. He has faced 801 hitters with a career ERA of 4.59, allowing 96 earned runs and maintaining a WHIP of 1.365 after giving up 195 hits (9.3 per nine innings).
The Seattle Mariners have a .320 on-base percentage and a .244 batting average this year. They have struck out 1,446 times (the 6th highest in MLB) and secured 1,345 hits. The Mariners have hit 238 home runs this season, with 734 RBIs, a slugging percentage of .420, and an average of 4.73 runs per game (10th in MLB). They’ve recorded 234 doubles, drawn 544 walks, and scored a total of 766 runs.
Seattle’s pitching staff has a team WHIP of 1.221 and a FIP of 3.98. They rank 15th in total hits allowed with 1,331, and have surrendered 694 runs throughout the season, resulting in an ERA of 3.87 (629 earned runs). Their strikeout-to-walk ratio is 8.80 (with 1,426 strikeouts vs. 454 walks) and they have allowed 192 home runs while yielding 4.27 runs per nine innings, which ranks 13th in the league.
Mariners relief pitchers have been called upon in 69 save situations, converting 43 saves this season. They sit at 19th in MLB with a save rate of 62.3%, deploying 550 relief pitchers throughout the year. Their relievers have made 216 high-leverage appearances and have encountered runners on base 132 times, with an inherited runner score rate of 25.2%. In 159 save opportunities, Seattle’s bullpen has recorded 90 holds along with 26 blown saves.
Over 13,164 innings, the Mariners have a defensive efficiency of 70.3%, which ranks 12th in the majors. They have turned 118 double plays while holding a fielding percentage of .988 (7th in the league). The Mariners have registered 1,355 assists, 69 errors, and recorded 4,388 putouts this season.
Throughout his MLB career, Luis Castillo has allowed 1,208 hits, tallying 1,493 strikeouts over 1,410 innings pitched. He has given up 557 earned runs, maintains a WHIP of 1.178, and has a FIP of 3.5. His strikeout-to-walk ratio stands at 3.30, facing 5,824 batters in the league. With an 84-84 record, Castillo has an earned run average of 3.55 while allowing an average of 7.7 hits per nine innings.
Who do you predict will emerge victorious in tonight’s MLB game regarding the spread or moneyline?
Parlay’s Expert Prediction: Bet on Seattle (-225) and take the under at 7 runs
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