2026 MLB Playoff Odds: Red Sox Keep Surging

Sean Tomlinson - Betting Analyst at Covers.com
Sean Tomlinson • Betting Analyst 16+ years betting experience
Updated: Sep 15, 2026 , 04:10 PM ET • 6 min read

The Boston Red Sox are heavy favorites to clinch a postseason berth, as are the Atlanta Braves and Chicago Cubs.

Willson Contreras Boston Red Sox MLB
Photo By - Reuters Connect. Jarren Duran celebrates a grand slam with Willson Contreras.

The final push for the postseason is on as division and wild-card races reach a boiling point, and we're seeing notable movement in the MLB playoff odds.

Some teams are no longer listed after clinching a playoff berth, even if seeding is yet to be determined. Others also aren't listed after being eliminated, and there's a group of five teams at the bottom clinging to a 1% chance or lower (the St. Louis Cardinals, Kansas City Royals, Miami Marlins, Detroit Tigers, and Pittsburgh Pirates).

Let's take a further look at the MLB odds.

2026 MLB playoff odds

Team Polymarket
Red Sox Boston Red Sox 100%
Braves Atlanta Braves 100%
Cubs Chicago Cubs  98%
Phillies Philadelphia Phillies 96%
White Sox Chicago White Sox  88%
Padres San Diego Padres 84%
Astros Houston Astros 73%
Guardians Cleveland Guardians  59%
Blue Jays Toronto Blue Jays  36%
Rangers Texas Rangers 33%
Diamondbacks Arizona Diamondbacks 22%
Orioles Baltimore Orioles 3%
Mariners Seattle Mariners 2%
Twins Minnesota Twins 2%

Odds last updated on 9-15. Odds from Polymarket. Use our Polymarket promo code (COVERS) for a $20 trading bonus when you deposit at least $10 as a new user.

    MLB Postseason format

    The MLB playoffs expanded in the 2022 season, adding an extra wild card to both the AL and NL, making it a total of 12 teams in the postseason.

    The new format will see the top two division winners in each league (Seeds 1 and 2) get a first-round bye, while the third-best division winner (Seed 3) will host the third wild card (Seed 6) — and the two remaining wild cards (Seeds 4 and 5) will face off — in a three-game series.

    Following the Wild Card Round, the No. 1 seed will face the winner of the two wild cards (Seeds 4/5), while the No. 2 seed will face the No. 3 vs No. 6 winner in the Divisional Round.

    If the second-best record in the league does not come from a division winner (e.g. the San Francisco Giants in 2021), they will remain the top wild card — and not get a first-round bye.

    MLB Postseason Odds FAQs

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    Sean Tomlinson - Covers
    Betting Analyst

    Sean Tomlinson has been navigating the sports media landscape since 2009, officially joining Sportsbook Review in 2021. Over the years, his commentary has been cited by major outlets such as The New York Times and Forbes, and he has regularly discussed his NFL insight as a guest on TSN 1050 and The Fan 590. An active bettor who places wagers on a daily basis, Sean spreads his action across several platforms, consistently favoring FanDuel and bet365 for their user-friendly interfaces. His primary handicapping focus centers on the NFL, MLB, and Formula 1, with a heavy emphasis on locating high-value prop opportunities. Sean maintains a keen interest in political prediction markets too, closely monitoring candidate odds throughout primary runs and general election cycles. He views sports betting as an interactive lens for deeper analysis, applying that exact philosophy to his editorial work. He holds a degree in media studies from the University of Guelph-Humber—a background that previously led to editorial roles at Bleacher Report and theScore.

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