 Shortly after returning to Calgary after the World Junior Championships, Alzner headed to Quebec City, Quebec to play in the 2007 Top Prospects Game and Alzner was named Captain of Team White and Sam Gagner was Captain of team Red.Alzner was an assistant captain in the 2007 Super Series against the Russian junior team, and was named captain of Team Canada for the 2008 World Junior Championships, both of which were won by Canada.Alzner was named the WHL Player of the Year and Defenceman of the Year for the 2007–08 WHL season.