The 2019 Major League Baseball season began on March 20, while the regular season ended on September 29. It was the 150th anniversary of professional baseball, dating back to the 1869 foundation of the Cincinnati Red Stockings. The postseason began on October 1. The World Series began October 22 and ended October 30 with the Washington Nationals defeating the Houston Astros in seven games to win their first World Series championship. The entire schedule was released on August 22, 2018.