Whoever wins the World Series, their division will become the third in which all teams have won a championship
The previous two divisions to achieve the feat are the AL Central, which got there in 1998 following a division realignment that saw the Brewers switch leagues and the Tigers join the division, and the NL East, which achieved the feat upon the Nationals winning the 2019 World Series.
The Brewers and Rays, meanwhile, are the only teams in their respective divisions (the NL Central and the AL East) to have never won a title. The divisions are two of three to have just one team that has never won, the third being the AL West where only the Mariners have never won. Lastly, the NL West is the only division in which two teams (the Padres and Rockies) have never won.