How old were they?

John O'Brien

MF · Born August 29, 1977

Age in each playoff game

1. 2002 Group stage (June 5, 2002), United States vs Portugal 3–2: 24 years, 280 days
2. 2002 Group stage (June 10, 2002), United States vs South Korea 1–1: 24 years, 285 days
3. 2002 Group stage (June 14, 2002), United States vs Poland 1–3: 24 years, 289 days
4. 2002 Round of 16 (June 17, 2002), United States vs Mexico 2–0: 24 years, 292 days
5. 2002 Quarter-final (June 21, 2002), United States vs Germany 0–1: 24 years, 296 days
6. 2006 Group stage (June 12, 2006), United States vs Czech Republic 0–3: 28 years, 287 days

Age in each season

1. 2002 (United States): 24 years, 275 days to 24 years, 305 days
2. 2006 (United States): 28 years, 284 days to 28 years, 314 days