Matthew Schaefer, a defenseman for the New York Islanders, has made NHL history by winning the Calder Trophy as the rookie of the year at just 18 years and 223 days old, making him the youngest recipient ever. He achieved this milestone by receiving all 198 first-place votes from the Professional Hockey Writers Association, a feat last accomplished by Teemu Selanne in the 1992-93 season. Schaefer's impressive performance included 23 goals and 36 assists, totaling 59 points in 82 games, setting a new record for production by an 18-year-old defenseman. He broke Phil Housley's previous records of 17 goals and 57 points for players in this age category. Additionally, Schaefer became the youngest defenseman to register a point in his debut and the first in over 90 years to lead all rookies in goals. Selected first overall in the 2025 NHL draft, Schaefer quickly became a key player for the Islanders, contributing significantly to their playoff push. The award was presented to him during a live segment on Good Morning America, surrounded by family and former players.