MLB upset candidates: surprising World Series clubs that could take down the Dodgers

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Even as the Los Angeles Dodgers enter 2026 as back-to-back champions, Major League Baseball’s widened playoff field keeps producing surprise title runs. The combination of deeper postseasons and roster swings this winter means several long-suffering clubs have a genuine path to knock off the favorites and lift a championship that has eluded them for decades.

Team Last World Series Title
Toronto Blue Jays 1993
Detroit Tigers 1984
Seattle Mariners Never
San Diego Padres Never
Minnesota Twins 1991
Milwaukee Brewers Never

Why this matters now

The postseason format introduced more volatility, shortening the margin for error and elevating the value of hot streaks and one dominant starter. For fans and front offices alike, that means offseason moves and injury management carry outsize weight. A club that puts together timely pitching and bullpen depth can overturn payroll gaps and preseason expectations.

Toronto Blue Jays

Toronto has rebuilt into a contender with a potent offense and a rotation that was reinforced aggressively this winter. Management prioritized high-leverage arms and rotation depth to convert past near-misses into a genuine title push.

What sets the Blue Jays apart is the balance between impact veterans and a still-young core. In a short series, a dominant starter or a shutdown bullpen can flip momentum quickly — and Toronto has targeted both.

Detroit Tigers

The Tigers have been assembling a veteran-laden staff around a rising young arm, treating the regular season as preparation for October. Adding experienced starters and preserving innings for October could let Detroit mimic the blueprint of recent champions who leaned on a strong postseason rotation.

Health will be the deciding factor. If the Tigers’ top starters are available and effective in relief-free roles, they can outduel deeper but less consistent offenses in a compressed playoff format.

Seattle Mariners

Seattle’s urgency is obvious: the franchise has never taken home a World Series title, and a maturing core of position players and pitchers has closed the gap with contenders. The Mariners’ path depends on getting big performances from the middle of the order and converting late-inning opportunities.

They are dangerous in short series because of their offense’s ability to produce runs in bunches and a pitching staff that can be matchup-friendly for October opponents.

San Diego Padres

San Diego’s window has been discussed for years. If the front office can coalesce roster pieces around elite bullpen arms and limit long layoffs for their starters, the Padres have the star power to challenge any team on a given night.

Expect the Padres to play small-margin baseball: tight defense, aggressive bullpen deployment and reliance on sluggers to decide one pivotal game at a time.

Minnesota Twins

The Twins combine veteran leadership with younger, versatile contributors who thrive in high-pressure plate appearances. In a season where offense still wins many postseason matchups, Minnesota’s lineup construction — a mix of contact and power — can create sustainable October threats.

Milwaukee Brewers

Milwaukee’s steady organizational philosophy — emphasis on pitching and situational hitting — makes them well-suited for playoff baseball. A deep bullpen and a reliable ace can turn a series in favor of the underdog, and the Brewers often build teams that excel in tight games.

  • Expanded playoffs: More teams mean more opportunity for upsets; seeding matters, but so does who’s hot in September.
  • Pitching depth: October still favors clubs that can staff multiple quality starts and restrict high-leverage damage.
  • Roster timing: Managing innings through the summer and making targeted additions in January/February can tip a narrow series.

None of this guarantees the Dodgers won’t repeat. But the changes to playoff structure and the way front offices approach roster construction have increased the likelihood that one of these long-title-starved franchises could end its drought. For viewers, that prospect preserves one of baseball’s most compelling storylines: decades of hope converging on a single fall weekend.

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