The NHL has never seen an 18-year-old do what Islanders' Matthew Schaefer just did

In a season already filled with milestones, Matthew Schaefer added another historic achievement Friday night — even in a tough 3–2 loss for the New York Islanders against the Los Angeles Kings.

The 18-year-old defenseman logged 29:24 of ice time, the most ever recorded in a single NHL game by an 18-year-old.

Early in the third period, the MSG Networks broadcast noted Schaefer was approaching the record and suggested overtime would likely be needed for him to break it. Instead, the Islanders’ desperate push to tie the game in the final minutes kept their rookie star on the ice almost nonstop — allowing him to surpass the mark without the benefit of extra time.

The previous record belonged to Rasmus Dahlin, who logged 29:15 for Buffalo in 2018. Schaefer now sits atop the list, ahead of Dahlin and Drew Doughty, another elite defenseman who played 29:04 as an 18-year-old in 2008.

Remarkably, Schaefer already owns several of the highest totals ever for players his age. Four of the top six performances by an 18-year-old now belong to the Islanders rookie, including a 29:01 outing earlier this month against San Jose.

His workload is becoming historic even beyond the record. Schaefer has now played at least 20 minutes in 54 consecutive games, the longest such streak ever recorded by a teenager in a single NHL season since time-on-ice became an official statistic.

Among all teenagers in league history, Schaefer’s 29:24 performance ranks 12th overall. The all-time teenage record remains 30:57, set by Jay Bouwmeester.

Within Islanders history, only one player younger than 21 has ever played more in a single game. Bryan Berard logged 31:30 in 1998 — but he was already 20 years old. Schaefer will not reach that age until August 2028.

For now, the Islanders rookie continues to redefine what’s possible for a teenage defenseman, and there more time he's out there on the ice, the more that seems possible.