Are the Seattle Mariners the Team to Beat in the AL? | 2026 MLB Season Preview (2026)

Could the Seattle Mariners be the next big champions in the city's sports history? With the Seattle Seahawks already claiming the world champion title, the Mariners are poised to make their own mark in baseball. After coming agonizingly close to their first World Series appearance last season, the team is back with a roster ready to take the next step and bring Seattle its first baseball championship.

But here's where it gets controversial... While many eyes are on the usual suspects in the American League, MLB Network’s insider Jon Morosi (https://x.com/jonmorosi?lang=en) boldly claims the Mariners might just be the least-flawed contender in the AL. Unlike the Dodgers in the National League, the AL lacks a single dominant team, leaving the door wide open for Seattle to step in. Morosi points out that even teams like the Blue Jays and Tigers, despite their recent moves, still have noticeable weaknesses. The Tigers, for instance, have bolstered their roster with Framber Valdez and Justin Verlander, but Morosi argues that the Mariners’ overall balance gives them an edge.

And this is the part most people miss... While the Mariners look strong on paper, there are still questions to address. New leadoff hitter Brendan Donovan, acquired after a long pursuit (https://sports.mynorthwest.com/mlb/seattle-mariners/seattle-mariners-brendan-donovan-land-trade-pursuit/1837897), is set to start at third base—a position he hasn’t played much in recent years. Morosi wonders if this experiment will pay off, though spring training should provide ample time for adjustment. Another area of uncertainty is the bullpen. Despite adding left-hander Jose A. Ferrer, the team’s high-leverage relief remains a question mark. However, Morosi trusts the front office’s ability to develop unheralded talent into reliable bullpen arms by season’s end.

Here’s a thought-provoking question for you: Can a team with no clear superstar still dominate the league? The Mariners’ success may hinge on their depth and consistency rather than individual brilliance, a strategy that could redefine what it means to be a championship contender.

In the AL West, the Mariners’ traditional rivals—the Houston Astros and Texas Rangers—remain formidable. However, Morosi suggests the Oakland Athletics could be the dark horse this season. With a young, talented core like Nick Kurtz, Jacob Wilson, and Lawrence Butler, the A’s might just surprise everyone, possibly even outperforming the Astros. Is this the year the Athletics finally break through?

For more insights, listen to the full conversation with Morosi on Wyman and Bob (https://sports.mynorthwest.com/podcast_player?a=1dc78971-4b99-48d1-a4c2-205c4a175e3b&n=Wyman+and+Bob&i=1691) or catch the show weekdays from 2-7 p.m. on the Seattle Sports app. And don’t forget to check out additional Mariners coverage, including their 2026 spring training schedules (https://sports.mynorthwest.com/mlb/seattle-mariners/seattle-mariners-spring-training-tv-radio-schedule-2026/1838871) and the players participating in the World Baseball Classic (https://sports.mynorthwest.com/mlb/seattle-mariners/heres-the-mariners-who-are-playing-in-the-2026-wbc/1838160).

What do you think? Are the Mariners truly the least-flawed AL contender, or is there another team you’re betting on? Let us know in the comments! Follow @ZacHereth (https://twitter.com/ZacHereth) for more updates.

Are the Seattle Mariners the Team to Beat in the AL? | 2026 MLB Season Preview (2026)
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