Ireland’s Win Of Quidditch Cup Was Hinted Beforehand
When Harry spends some alone time in Diagon Alley in the Prisoner of Azkaban, he overhears a wizard talking about the Firebolt.
“Irish International Side’s just put in an order for seven of these beauties!” the proprietor of the shop told the crowd. “And they’re favorites for the World Cup!” In the Goblet of Fire, the Irish end up winning the Quidditch World Cup when they beat Bulgaria.