The teams that will play in the 2025 World Series have not been determined yet because the League Championship Series (ALCS and NLCS) are still ongoing. The American League Championship Series (ALCS) contenders are the Toronto Blue Jays and either the Seattle Mariners or Detroit Tigers. The National League Championship Series (NLCS) contenders are the Milwaukee Brewers and either the Los Angeles Dodgers or Chicago Cubs. The winners of the ALCS and NLCS will face off in the World Series starting on October 24, 2025.