Jaskin was originally drafted by the Blues in the second round (No. 41 overall) in the 2011 NHL Draft. Last season, the 6-foot-2, 216-pound forward dressed in 76 regular season games with the Blues, tallying 17 points (six goals, 11 assists) and 14 penalty minutes. Overall, the Omsk, Russia native has appeared in six seasons with the Blues, totaling 61 points (25 goals, 36 assists) and 82 penalty minutes in 266 career regular season games.

Jaskin has also recorded four points (two goals, two assists) and 11 penalty minutes in 14 career postseason games.

WIth Jaskin's signing, the Blues have now signed five of their restricted free agents, agreeing to deals with Robby Fabbri, Oskar Sundqvist, Mackenzie MacEachern and Jordan Binnington earlier in the week. Remaining restricted free agents still to be signed include Joel Edmundson, Jordan Schmaltz and Petteri Lindbohm.