After some initial confusion, Prevost was confirmed to be a White Sox fan by his brother, John. He's not a Cubs fan. In fact, Prevost is such a big White Sox fan that he was at Game 1 of the 2005 World Series at what is now known as Rate Field. Prevost made an appearance in the stands during a ninth-inning crowd shot:

A video of Pope Leo XIV at the 2005 World Series game between the White Sox and the Houston Astros emerged Saturday, confirming his fandom for the Chicago baseball team. The first American pontiff in history was caught on camera as his face twisted when White Sox closer Bobby Jenks closed out a 5-3 win over the Astros.

The Fox Sports camera could have panned to any fan during the ninth inning of Game 1 of the 2005 World Series; it randomly landed on the future Pope Leo XIV.