As of September 17, 2025, the following MLB teams have clinched or are likely to clinch their division titles:

🏆 AL East

Toronto Blue Jays: Secured the division with a 5-game lead over the Yankees. 

🏆 AL Central

Detroit Tigers: Clinched the division with a 5.5-game lead over the Guardians. 

🏆 NL East

Philadelphia Phillies: Clinched the division with a 5-game lead over the Mets. 

NOT YET CLINCHED :

🏆 AL West

Seattle Mariners: Narrowly lead the Astros by 0.5 games. 

🏆 NL Central

Milwaukee Brewers: Lead the division by 5 games over the Cubs. 

🏆 NL West

Los Angeles Dodgers: Hold a 2-game lead over the Padres.