Mason McDonald
Mason McDonald was expected to back up Mackenzie Blackwood as Canada's goaltender throughout the world juniors. However, Blackwood was suspended for eight games by the OHL after slashing an opponent and will have to miss Canada's first two games of the tournament. That puts McDonald between the pipes where he's looked shaky in precompetition exhibitions, including a 5-4 shootout loss to a team of Canadian university all-stars on Dec. 12 and a 7-6 win over Sweden on Wednesday.
Captain Canada
Brayden Point was always going to be an important piece of Canada's world junior championship title defence. He's one of four returning veterans from last year's gold-medal-winning squad and arguably the best player in the WHL this season. Point was given the captaincy on Thursday, saddling him with a key leadership role for Canada. Fellow world junior vets Lawson Crouse and Joe Hicketts are Point's alternate captains.
OHL showcase
The top five scorers in the OHL will be playing in this game. Americans Christian Dvorak and Matthew Tkachuk are Nos. 1 and 2 in the OHL, followed by Canadian Mitch Marner. Alex DeBrincat, the fourth-highest point getter in the OHL, will lace up for the United States, while No. 5 Dylan Strome will be on Canada's top line centring Marner. All five players know each other exceedingly well: Dvorak, Tkachuk and Marner are all teammates on the London Knights, while DeBrincat and Strome are the core of the Erie Otters' offence.
Auston Matthews
Auston Matthews isn't just considered the top prospect in the coming NHL draft this summer but some argue he's the best player in the world that's not in the NHL. Instead of playing junior in the Canadian Hockey League or going to the NCAA, the American has chosen to play professionally for the ZSC Lions of the Swiss National League A. This makes international tournaments such as the world juniors a rare chance to see Matthews's talent before he breaks in to the NHL.
International ice surface
Canada has not won a world junior championship on European ice since 2008 in the Czech Republic. The larger Olympic-size rink is definitely a contributing factor for Canada's struggles outside of North America, with defensive schemes, playmaking and stamina all effected. The Canadians have been practising and playing on Olympic-size rinks all month, but there's still a learning curve. Fortunately, the Americans will presumably also be unused to the larger ice surface.