Argentina's football association postponed all fixtures on Monday to mourn Pope Francis, an ardent fan of the game and supporter of Buenos Aires' San Lorenzo team.

ROME—Top-flight football matches in Italy and Argentina were postponed after the death of Pope Francis on Monday. The Buenos Aires club that the Argentine pontiff supported throughout his life was also mourning its most famous fan.

Throughout his papacy, Pope Francis took strong and clear stances on a range of international, social, and environmental issues. But one often-overlooked aspect of his personality was his enduring love for sport.