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:

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.

Recently resurfaced footage has revealed that Robert Francis Prevost, now Pope Leo XIV, attended Game 1 of the 2005 World Series in Chicago wearing Chicago White Sox gear.