In 1999, the Major League Baseball All-Century Team was chosen by popular vote of fans. To select the team, a panel of experts first compiled a list of the 100 greatest Major League Baseball (MLB) players from the 20th century. Over two million fans then voted on the players using paper and online ballots.

The 1999 World Series was the championship series of Major League Baseball's (MLB) 1999 season. The 95th edition of the World Series, it was a best-of-seven playoff between the defending American League (AL) and World Series champion New York Yankees and the National League (NL) champion Atlanta Braves in a rematch of the 1996 World Series, in which the Yankees prevailed. The Yankees swept the 1999 Series in four games for their second consecutive title, third in four years, and 25th overall. It was the Yankees' third straight defeat of the Braves franchise in the Fall Classic. Yankees closer Mariano Rivera was named the World Series Most Valuable Player. This was the first World Series to feature both #1 seeds from the AL and NL, a phenomenon that has only occurred twice since, in 2013 and 2020.