An 18-year-old standout from last season’s Penn State University team has earned a spot on the Toronto Maple Leafs’ opening-night roster, marking a swift transition from college hockey to the NHL. The team’s youngest player, set to turn 19 in early September, capped an outstanding rookie campaign by winning the Calder Trophy—the award given annually to the league’s top first-year performer. His inclusion reflects the Leafs’ focus on developing young talent while addressing key positional needs ahead of the upcoming season. Fans and analysts will be watching closely to see how he contributes in his first full professional campaign.

McKenna, 18, who played at Penn State University last season, is expected to make the Maple Leafs' roster out of camp. Schaeffer, who will turn 19 on Sept. 5, won the Calder Trophy last season at the ...