Robert Francis Prevost, elected Thursday as the first pope from the United States, will soon face the Church’s major global concerns. But one of the first questions people had was more local: Cubs or White Sox?

His brother John cleared it up in an interview with NBC Chicago, saying flatly, “Whoever said Cubs on the radio got it wrong. It’s Sox.”

The curiosity wasn’t random. As soon as Prevost was named pope, fans and media started speculating about his baseball roots. Even the Cubs jumped in, posting on social media and recalling broadcaster Harry Caray’s legendary call—“The good Lord wants the Cubs to win!”

But according to John, their mom, raised on the city’s North Side near Wrigley Field, was the family’s Cubs fan. Their dad? A Cardinals supporter. Robert, though? Not a chance. “He was never, ever a Cubs fan,” John told WGN-TV.

The White Sox, eager for a win of any kind, leaned in. They sent Pope Leo XIV a jersey and hat directly to the Vatican. “Family always knows best,” the team told NBC Chicago. “It sounds like Pope Leo XIV’s lifelong fandom falls a little closer to 35th and Shields. Some things are bigger than baseball, but in this case, we’re glad to have a White Sox fan represented at the Vatican.”

Despite decades spent in Peru, Prevost’s Chicago roots and sports interests have stayed with him. In 2016, he retweeted a post celebrating his alma mater Villanova University’s NCAA men’s basketball championship. He graduated in 1977.