What happened: Schaefer's birthday fell on Sept. 5 during the NHL offseason. He enters 2026-27 as the reigning Calder Trophy winner.
Why it matters: Schaefer set the NHL points record for an 18-year-old defenseman before reaching the milestone. His second NHL season begins later this month.
By the numbers: 19 — Schaefer's age as of Sept. 5; 24 — days between his birthday and the Sept. 29 season opener.
What to watch: Training camp will provide the next look at Schaefer before the new season.