Major League Baseball er den amerikansk proffligaen i baseball. Den består av 30 lag i USA og Canada. Lagene spiller 162 kamper. Før sluttspill og World Series. Lagene er inndelt i American League og National League som har 15 lag hver.
Ligaene ble stiftet i henholdsvis 1876 og 1901.
American League:
• Baltimore Orioles (Wiki) (East)
• Boston Red Sox (Wiki) (East)
• New York Yankees (Wiki) (East)
• Tampa Bay Rays (Wiki) (East)
• Toronto Blue Jays (Wiki) (East)
• Chicago White Sox (Wiki) (Central)
• Cleveland Guardians (Wiki) (Central)
• Detroit Tigers (Wiki) (Central)
• Kansas City Royals (Wiki) (Central)
• Minnesota Twins (Wiki) (Central)
• Houston Astros (Wiki) (West)
• Los Angeles Angels (Wiki) (West)
• Oakland Athletics (Wiki) (West)
• Seattle Mariners (Wiki) (West)
• Texas Rangers (Wiki) (West)
National League:
• Atlanta Braves (Wiki) (East)
• Miami Marlins (Wiki) (East)
• New York Mets (Wiki) (East)
• Philadelphia Phillies (Wiki) (East)
• Washington Nationals (Wiki) (East)
• Chicago Cubs (Wiki) (Central)
• Cincinnati Reds (Wiki) (Central)
• Milwaukee Brewers (Wiki) (Central)
• Pittsburgh Pirates (Wiki) (Central)
• St. Louis Cardinals (Wiki) (Central)
• Arizona Diamondbacks (Wiki) (West)
• Colorado Rockies (Wiki) (West)
• Los Angeles Dodgers (Wiki) (West)
• San Diego Padres (Wiki) (West)
• San Francisco Giants (Wiki) (West)
