Vainonen, 19, spent his first season with the Kingston Frontenacs in the CHL, and the native of Finland was fourth among defencemen with 22 points. He also was the captain of Finland's team at the 2012 U-18 World Championships.
He was the Predators' sixth selection in the 2012 draft at No. 118 overall in the fourth round.
It's pretty crazy, but believe me when I say we didn't draft these players with the mindset we had to because they had good hockey-playing dads. It just turned out that way. But we're certainly glad they're a part of our organization.
— Arizona Coyotes director of amateur scouting Tim Bernhardt regarding the coincidence that six of the organization's top prospects are sons of former NHL players