Parayko, 23, completed his second NHL season with the Blues in 2016-17. The 6-foot-6, 225-pound defenseman appeared in 81 regular season games, posting a career-high 35 points, including four goals and 31 assists. Parayko also appeared in 11 postseason games, ranking second among Blues defensemen with five points (two goals, three assists) and second among all Blues skaters with a plus-6 rating.
Overall, Parayko has played in 160 career regular season games, accumulating 68 points, (13 goals and 55 assists). In addition, his plus-35 career rating shares 10th among all defensemen over the past two regular seasons.
The World Championships will mark the second international competition for Parayko this season. Previously, the St. Albert, Alberta, native appeared in three games and recorded three assists with Team North America at the 2016 World Cup of Hockey.