The slick-skating young Finn made his NHL debut last season and could easily have garnered Calder Trophy consideration with his performance, playing in all 82 games and scoring 12 goals and 33 points. Heiskanen's minus-14 rating highlighted his growing pains, but considering he was taking a regular shift at 19 years old, some hiccups are to be expected. Once he matures, he should be a strong two-way asset for Dallas, using his wheels and passing skills to clear his own zone and his advanced offensive instincts to make an impact at the other end. With John Klingberg entrenched as the team's No. 1 defenseman, Heiskanen can develop at his own pace without having too much responsibility piled on his shoulders, but it may not be long before he and Klingberg form one of the most dynamic blue-line duos in the league.