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Detroit Tigers vs. Seattle Mariners prediction, pick for ALDS Game 5 on Friday 10/10/25

Detroit Tigers vs. Seattle Mariners prediction, pick for ALDS Game 5 on Friday 10/10/25

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By: Bryan Armetta

So it’s come to this: Tigers vs. Mariners, Game 5. A trip to the ALCS hanging in the balance.

Neither of these two franchises have been postseason mainstays over the past decade. That’s what makes this matchup so fascinating; extensive playoff experience is hard to come by on both rosters. The visiting Tigers enter tonight in a unique situation, with ace Tarik Skubal toeing the slab. For the Mariners, it’ll be former All-Star George Kirby on the bump.

Which of these two World Series contenders will stave off elimination? Below, I’ve laid out my preview, prediction, and best bet for Friday’s showdown between the Detroit Tigers and the Seattle Mariners.

Detroit is favored (-131) over Seattle, with the over/under set at six runs. Let’s break down which side has the edge on DraftKings Sportsbook entering tonight’s contest.

Tigers vs. Mariners prediction, preview

In Game 2, the Mariners managed to score two runs off of Skubal en route to a 3-2 victory. A similar offensive output is needed against baseball’s most dominant pitcher. This season, the reigning AL Cy Young winner owns a 2.21 ERA, 0.89 WHIP and 241 strikeouts. Including the postseason, Skubal has allowed more than two earned runs during ten of his 33 appearances in 2025.

There is no ‘kryptonite’ for the sport’s most lethal arm. However, Seattle has had a bit of success in this spot. Over six career outings vs. the Mariners, Skubal owns a 3.53 ERA. That’s a terrific mark for most pitchers, but not Detroit’s leading man. In two of their three meetings this season, the M’s managed to score at least three runs off of the southpaw. Still, they can’t realistically expect more than a couple of runs tonight.

It’ll be imperative for Mariners starter George Kirby to deliver a quality performance. The right-hander is more than capable, having pitched five innings of two-run ball in Game 1. It’s been an up-and-down season for the 27-year-old. However, he’s allowed six combined runs over his last four outings.

The Tigers enter Friday with some momentum, having scored a postseason-high seven runs in Game 4. However, most of their success came against Seattle’s bullpen. In this must-win matchup, expect Mariners manager Dan Wilson to utilize an all hands on deck approach. That could mean an appearance from Luis Castillo, especially if Kirby gets into trouble early. The former All-Star held Detroit to one hit over 4.2 innings in Game 2.

Tigers vs. Mariners pick, best bet

Skubal gives the Tigers an advantage during the early innings of this contest. However, as the evening goes along, that edge shifts towards the Mariners. Seattle wields the better lineup and bullpen, especially if Castillo takes the mound. In a potential nail-biter, expect the home team to claw out a gutsy win.

Best Bet: Mariners ML (+107)

Bryan Armetta is a New York-based writer that has spent over eight years in sports media. Working for DraftKings since 2024, he currently serves as a writer, editor and analyst for all things sports and pop culture. Bryan specializes in MLB, NBA, NFL, college sports and entertainment content. Prior to his time at DKN, he worked for MLB Network, NHL Network and SiriusXM Sports.
Disclaimer

I am a promoter at DraftKings and am also an avid fan and user and may sometimes play on my personal account in the games that I offer advice on. Although I have expressed my personal view on the games and strategies above, they do not necessarily reflect the view(s) of DraftKings and do not constitute a representation that any particular strategy will guarantee success. All customers should use their own skills and judgment in building lineups. I may also deploy different players and strategies than what I recommend above. I am not an employee of DraftKings and do not have access to any non-public information.