World Cup 2026 squads

You only need 23 people in a group for there to be a 50% chance that at least two people share the same birthday.
This counterintuitive concept is known as the Birthday Paradox.

World Cup squads have 23 players.

England
Eberechi Eze    June 29, 1998 (aged 27)
Jude Bellingham    June 29, 2003 (aged 22)

Czech Republic
David Douděra    May 31, 1998 (aged 28)
Michal Sadílek    May 31, 1999 (aged 27)

South Africa
Brandon Petersen    September 22, 1994 (aged 31)
Nkosinathi Sibisi    September 22, 1995 (aged 30)

South Korea
Hwang In-beom    September 20, 1996 (aged 29)
Lee Dong-gyeong    September 20, 1997 (aged 28)

I tested four squads an all have two players with the same birthday.