Pope Leo XIV's brother says he's a Chicago White Sox fan after Cubs claim him in social media post

The new pope's Chicago roots led to speculation whether he held any rooting interests in the city's teams. The answer isn't straightforward.

Robert Francis Prevost, elected Thursday as the first pope from the United States, will soon have the opportunity to declare where he stands on some of the church's most pressing topics.

But first, many wanted to know his leanings on a different topic. Is Prevost, a Chicagoan, a fan of the Cubs or the White Sox?

Prevost’s brother John told NBC Chicago that, contrary to speculation, his brother rooted for the city's South Side team.

“Whoever said Cubs on the radio got it wrong," John Prevost said. "It’s Sox."

The question of his rooting interests was one of immediate fascination as soon as Prevost was announced Thursday as the newest leader of the 1.4 billion Catholics worldwide.