What happened: Cavan Sullivan turned 17 on Sept. 29. Pochettino called him "nearly a man" while marking the birthday with the national team.
Why it matters: Sullivan made his senior debut against Peru at 16 on Sept. 26, the youngest USMNT debutant since 2006. He entered camp after three goals in two MLS games last week.
What to watch: The U.S. plays Chile in a friendly Tuesday.