As the 2026 MLB season gets underway, the Seattle Mariners step into spring training as the defending AL West champions, fresh off a 90-win 2025 campaign that ended a long division drought. They fell just short in the ALCS, blowing a 3-2 lead to the Toronto Blue Jays, but the core roster returns mostly intact, with smart additions and a farm system loaded with talent. This feels like a team built not just to win the division again, but to make a legitimate push deep into October.
The pitching staff remains the biggest strength and one of the best in baseball. The rotation features Logan Gilbert, Bryan Woo, George Kirby, Luis Castillo, and Bryce Miller, a group where multiple arms can contend for Cy Young honors if healthy. Gilbert could lead the way with a refined approach, while Woo builds on his All-Star form and Kirby rebounds from injury setbacks to potentially become the staff’s most valuable pitcher. Castillo provides veteran stability, and Miller is expected to bounce back strong. Depth options like Emerson Hancock give flexibility if anyone misses time. The bullpen, anchored by elite closer Andres Munoz and backed by Matt Brash, Eduard Bazardo, Gabe Speier, and Jose A. Ferrer, should lock down late innings consistently.
Offensively, the lineup blends star power with improved depth. Cal Raleigh, after a historic 60-homer, 125-RBI season that made him AL MVP runner-up, anchors the middle as the game’s top catcher, though a more realistic 40-homer output feels likely as pitchers adjust. Julio Rodriguez, entering his age-25 season, is primed for a massive year, potentially joining the 40-40 club while chasing MVP votes alongside the likes of Aaron Judge. Key offseason addition Brendan Donovan brings contact skills, on-base ability, and versatility to third base, addressing a previous weak spot and possibly flirting with a batting title in the leadoff role. Josh Naylor at first base (locked up long-term), Randy Arozarena in left, Victor Robles and Luke Raley platooning in right, Dominic Canzone at DH, J.P. Crawford at short, and Cole Young at second round out a balanced group. The lineup projects near the top of the league in offensive WAR, with better contact rates and hard-hit metrics than recent years.
The AL West remains the Mariners’ to lose. The Astros are in regression mode after missing the playoffs, and the Rangers face inconsistency despite some additions. FanGraphs and others give Seattle strong odds to repeat, with projections around 93 wins from systems like PECOTA putting them well ahead of the pack.
Challenges exist, of course. The offense can be streaky and top-heavy, relying heavily on Raleigh and Rodriguez for power in a pitcher-friendly park. The bottom of the order needs more consistent production, and pitcher health is critical after some 2025 injuries. Depth will be tested, but prospects like Colt Emerson (who could take over at third midseason, shifting Donovan), Kade Anderson, and Ryan Sloan offer upside for in-season boosts or playoff roles.
My prediction: The Mariners win 94 games, take the AL West by a comfortable margin (8-10 games), and secure the top AL seed with a bye. They hit the over on 89.5 wins easily. Boldly, this is the year they break through: healthy pitching carries them to the World Series for the first time in franchise history, with Rodriguez delivering a superstar season and the rotation dominating in October. The vibes are right under Dan Wilson, and unfinished business from last fall should fuel a special run. Mariners fans have waited long enough; 2026 could finally deliver the hardware.
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