Matthew Schaefer, a defenseman for the New York Islanders, has been awarded the 2025-26 Calder Memorial Trophy as the NHL's top rookie, making history as the youngest winner at 18 years and 223 days. Schaefer received all 198 first-place votes, becoming the first unanimous recipient since Teemu Selanne in 1992-93. He led all first-year players in ice time and was tied for the rookie lead in goals, finishing the season with 60 points. Ivan Demidov of the Montreal Canadiens finished second in voting, leading rookies in points and assists. Schaefer's family, particularly his father Todd and brother Johnathon, were present to celebrate his achievement, highlighting the support he has received following the passing of his mother, Jennifer, from breast cancer in 2024. This award marks a significant milestone in Schaefer's young career as he continues to excel in the league.