How I'd Build the Ultimate Mariners Lineup: My Offseason Plan (2026)

Imagine the thrill of reshaping the Seattle Mariners into a powerhouse – that's the excitement buzzing in my mind after hearing Jorge Polanco's headed to the Mets, dashing Seattle's hopes for his signature. If I were calling the shots for the Mariners' offseason, I'd craft a bold strategy to elevate this team to championship contenders, turning potential into palpable energy on the field. But here's where it gets controversial – my plan involves shaking things up with trades and signings that might ruffle some feathers among die-hard fans. Stick around to see how I'd transform the roster and why these moves could spark heated debates in the comments below. Let's dive in and explore the current lineup, then unveil my vision for a stronger, more competitive squad that keeps Mariners supporters on the edge of their seats.

First, let's assess the Mariners' current roster as it stands today, providing a clear snapshot for anyone new to the team's dynamics. In the outfield, we've got Julio Rodriguez patrolling center field, Randy Arozarena in left, and Victor Robles in right. Randy Arozarena, for instance, brings his proven experience from the Rays, having delivered clutch hits and defensive prowess in multiple seasons. The infield features Josh Naylor at first base, Cole Young at second, Ben Williamson at third, and JP Crawford at shortstop. Behind the plate, Cal Raleigh anchors as catcher, while Dominic Canzone handles designated hitter duties. On the bench, you've got Leo Rivas and Luke Raley ready to step in. The starting pitchers include Bryan Woo, Luis Castillo, Logan Gilbert, Bryce Miller, George Kirby, and Emerson Hancock – a solid foundation, but one ripe for strategic upgrades.

Of course, the untouchable core remains intact: stars like Julio Rodriguez, Cal Raleigh, and JP Crawford aren't going anywhere, and neither is Josh Naylor, who locked in a five-year deal extending his Seattle tenure through 2030. Everyone else, however, could be fair game in trades, setting the stage for my ambitious overhaul.

And this is the part most people miss – the infield needs a targeted injection of talent to avoid relying on unproven youth like Young and Williamson as everyday starters. The Mariners have openly expressed interest in bolstering this area with one key infielder, so that's exactly where I'd focus.

For third base, I'd pursue Jordan Westburg from the Baltimore Orioles in a trade. While everyone's buzzing about Brendan Donovan, Westburg offers a fresher, more affordable alternative with serious upside. He might have stumbled in the previous season, but in 2024, he dazzled with All-Star caliber play, racking up 2.4 bWAR in just 107 games – a stat that measures a player's overall contribution beyond just hitting or pitching, making it a great way for beginners to gauge value. To seal this deal, I'd send Luis Castillo to Baltimore, freeing up payroll and injecting youth and potential into Seattle's lineup. This move saves the team money while positioning Westburg as a cornerstone at third.

Shifting to the outfield, Seattle desperately needs a reliable right fielder, but why stop there? What if we aimed higher and swung for the fences to truly elevate the team's offensive firepower?

That's right – I'd use the savings from trading Castillo to lock in Kyle Tucker as the new right fielder. Tucker is a bona fide superstar, a player whose presence instantly bolsters any lineup. Picture the impact of his World Series experience from Houston, adding that championship edge to Seattle's roster. Pairing him with Rodriguez and Raleigh would create one of the most formidable trios in baseball, igniting excitement and drawing crowds eager to witness this 'big three' in action.

For designated hitter, the Mariners require a seasoned veteran to anchor the spot, especially if World Series aspirations are real. Dominic Canzone and Luke Raley, while promising, aren't yet equipped to carry that load at the highest level.

Enter Carlos Santana, a reliable choice who still delivers on the field (posting 1.1 bWAR in 2025) and fits the budget nicely. Plus, his rapport with Julio Rodriguez could foster better chemistry in the clubhouse, enhancing team morale and performance – a subtle but crucial factor in baseball's high-stakes environment.

With these strategic shifts, the revamped roster could shine like this:

  • CF: Julio Rodriguez
  • RF: Kyle Tucker
  • LF: Randy Arozarena
  • 1B: Josh Naylor
  • 2B: Cole Young
  • SS: JP Crawford
  • 3B: Jordan Westburg
  • C: Cal Raleigh
  • DH: Carlos Santana
  • Bench: Victor Robles, Dominic Canzone, Leo Rivas, Luke Raley
  • SP: Bryan Woo
  • SP: Logan Gilbert
  • SP: George Kirby
  • SP: Bryce Miller
  • SP: Emerson Hancock
  • SP: Logan Evans

This lineup towers over the current one, even without Castillo anchoring the rotation, by blending established stars with high-potential newcomers for a balanced, electrifying team.

But here's the real controversy: Is trading a proven ace like Castillo worth the gamble for younger talent like Westburg? And would fans revolt at the payroll shifts needed to bring in Tucker? Some might argue sticking with the status quo or pursuing different free agents, like Polanco himself, would be safer. What do you think – does this plan ignite your passion or leave you skeptical? Would you prioritize offense over pitching stability? Share your takes in the comments; I'd love to hear agreements, disagreements, or even your own offseason dreams for the Mariners!

About the Contributor

Simon Rogers is a talented graphic illustrator for the Daily Evergreen, where he's been contributing since Spring 2022. As a senior majoring in Digital Technology & Culture from Pullman, Washington, Simon blends his love for sports and visuals into insightful pieces like this one.

How I'd Build the Ultimate Mariners Lineup: My Offseason Plan (2026)

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