After beginning the tournament in an offensive role, centring a line with Connor McDavid and Sam Reinhart, he finished on Canada's checking line and earned praise from head coach Brent Sutter for his defensive play.
Playing on the top line with Sam Reinhart and Connor McDavid, Klimchuk scored eight points to help lead Canada to a gold medal at the 2013 IIHF World U18 Championships.
Sinéad O'Connor | Sandra Day O'Connor | O'Connor | James O'Connor | Des O'Connor | Terminator: The Sarah Connor Chronicles | James O'Connor (rugby union) | Connor Trinneer | Flannery O'Connor | Mark O'Connor | Donald O'Connor | Carroll O'Connor | Tim O'Connor | Sandra Day O’Connor | Kevin O'Connor | Kenneth Connor | John Kennedy O'Connor | John Joseph O'Connor | Jack O'Connor (American writer) | Jack O'Connor | Gerry O'Connor | C. Y. O'Connor | Connor MacLeod | Cardigan Connor | Sinead O'Connor | Sarah Connor | Sandra Day O'Connor United States Courthouse | Richard O'Connor | Richard Nugent O'Connor | Karen O'Connor |
Four players to date have qualified under this rule (all in the Ontario Hockey League's territory): centre John Tavares in 2005, defenceman Aaron Ekblad in 2011, centre Connor McDavid in 2012, and defenceman Sean Day in 2013.