New York Islanders defenseman Matthew Schaefer has locked in the Calder Memorial Trophy as the NHL's top rookie through a record-setting 2025-26 campaign that included leading all first-year players in goals and points while earning unanimous first-place votes from the Professional Hockey Writers Association. His status as the youngest recipient in league history, combined with standout production on the blue line and consistent recognition in official rookie rankings, has driven trader consensus to near-certainty on his outcome. Gabe Perreault and other prospects trail far behind due to lower ice time and point totals. The only realistic shifts would involve a major post-voting reversal or eligibility ruling, both of which remain highly improbable given the finalized ballot results.