Pope Leo XIV was born on Chicago's South Side and grew up in the south suburban area.
However, mixed reports have Chicagoans wondering who does he root for?
His brother John Prevost told ABC News' Alex Perex that Pope Leo is a White Sox fan.
However, he later clarified that their mother was from the North Side and that side of the family root for the Cubs.
"I heard he is a Cubs fan. God bless him," said Father Gregory Sakowicz of Holy Name Cathedral hours after the white smoke blew out of the Vatican's chimney.
Wrigley Field put "Hey, Chicago. He's a Cubs Fan!"
Shortly after, the Chicago White Sox claimed the pope's fandom, saying, "Family always knows best, and it sounds like Pope Leo XIV's lifelong fandom falls a little closer to 35th and Shields. Some things are bigger than baseball, and in this case, we're glad to have a White Sox fan represented at the Vatican. A pinstripes White Sox jersey with his name on it and a hat already are on the way to Rome, and of course, the Pontiff always is welcome at his ballpark."