Tale of Two Cities
OK, if you want to get technical, make it three cities.... Then forget Seattle.
The Houston Astros began their Major League Baseball life in 1962 as the Houston "Colt 45's", an expansion team in MLB's National League. Three years later, in 1965, thanks in part to our country's high-profile space program and the Houston Space Flight Center, the Colt 45's changed their name to the Houston "Astros” and moved into the then brand-new Houston "Astrodome". After 51 years of competition in MLB's National League, the Astros left the National League and joined the American League (West division) in 2013.
The Milwaukee Brewers club began their MLB life in 1969 in Seattle, Washington as the "Seattle Pilots", an expansion team in MLB's American League. After only one season in Seattle, the team moved to Milwaukee, Wisconsin and became the "Milwaukee Brewers." After 28 years competing in MLB's American League, the Brewers left the American League and joined the National League (Central division).
These two team's, the Houston Astros and the Milwaukee Brewers, as far as I know, are the only MLB franchises in history to switch leagues.
As I write this, they are competing for League Championship Pennant's in their respective league's. If both win their respective LCS, there will be something unique to add to the MLB "record book's" come opening day of the 2018 World Series.
It sure beats hurricanes and politics!
UPDATE: The league-swapper's won’t be meeting each other this year in the World Series. It’l be the Red Sox v. the Dodgers.
/fl