The youth movement on the North Side has been years in the making. It's been months in the making on the South Side.
But regardless of how long it's taking, there's no doubting that the Cubs and White Sox are both building for the future.
Need one stat to prove it? How about age?
Baseball America put together a list of the youngest players in baseball, from the majors through the minors, and the Sox and Cubs are both represented.
The White Sox landed one player, outfielder Avisail Garcia, on the list of the youngest players in the American League. He's the sixth youngest, to be precise, at 22.8 years old.
The youngest player in the American League is Red Sox shortstop Xander Bogaerts.
The Cubs might not have one of the 10 youngest players in the National League — the youngest there is Nationals outfielder Bryce Harper — but, as with all things Cubs, look to the minors. The North Siders boast a pair of the youngest players in the Pacific Coast League: Javier Baez and Arismendy Alcantara. Two of the Cubs' top prospects, the duo ranks first and 10th, respectively, on the list of the youngest players in that league. Baez, born on Dec. 1, 1992, is the youngest player in either of the Triple-A leagues.
Take a look at the full list here.