MLB: Opening Day 2021 The traditional Opening Day of the Major League Baseball season is set to feature all 30 teams, as the competition reverts to its conventional 162-game regular-season format. Los Angeles Dodgers are reigning World Series champions American League National League Away team All games Apr 1 Home team Toronto Blue Jays New York Yankees Cleveland Indians Detroit Tigers Baltimore Orioles Boston Red Sox Minnesota Twins* Milwaukee Brewers Pittsburgh Pirates Chicago Cubs Atlanta Braves Philadelphia Phillies Los Angeles Dodgers Colorado Rockies Arizona Diamondbacks San Diego Padres St. Louis Cardinals Cincinnati Reds Texas Rangers Kansas City Royals Tampa Bay Rays* Miami Marlins New York Mets Washington Nationals Chicago White Sox Los Angeles Angels Houston Astros Oakland Athletics San Francisco Giants* Seattle Mariners Mookie Betts Los Angeles Dodgers WORLD SERIES CHAMPIONS American League Winners by league since 1903 National League 66 50 Titles: Yankees 27 (record), Cardinals 11, Giants 8, Athletics, Red Sox 9, Tigers 4, Dodgers 7, Reds, Pirates 5, Orioles, Twins, White Sox 3, Cubs, Braves 3, Indians, Royals, Blue Jays 2, Phillies, Mets, Marlins 2, Astros, Angels 1 Diamondbacks, Nationals 1 *Interleague game Source: MLB Picture: Getty Images © GRAPHIC NEWS