Lalonde, a free agent invitee to training camp, has gone 0-0-1 with a 1.99 goals-against average and .933 save percentage in two preseason games, turning aside 28-of-30 shots in 60:27 of action. He stopped 19-of-21 shots in 30:53 at Pittsburgh on September 25 and turned aside all nine shots faced in 29:34 at St. Louis on September 29.
The 18-year-old Kingston, Ontario native made his major junior hockey debut in 2021-22 with the Erie Otters of the Ontario Hockey League, posting a 24-25-3 record with a 3.62 GAA, .877 SV% and one shutout in 54 outings. He earned OHL First All-Rookie Team honors after finishing third in the OHL in games played and leading league rookies in games played, wins and minutes played (3,066). The 6-1, 185-pound netminder also appeared in one game for Team Canada at the U18 World Championships, going 1-0-0 with a 3.00 GAA and .917 SV%.