LAHTI, Finland — Miro Heiskanen stops behind the net, surveys the ice for a moment, then turns to his right.



Crossover after perfectly timed crossover, the second-year defenseman, wearing his No. 4 Dallas Stars jersey, churns past a forechecker, glides through the neutral zone and enters the offensive zone with ease before tapping the brakes around the right face-off circle.



Heiskanen stops, protects the puck for a second and whips a cross-ice pass to No. 26 in a Dallas Stars jersey – Jere Lehtinen.



This isn’t a Stars fan’s elaborate dream sequence or a video-game simulation. Heiskanen, who represents the Stars’ future more so than any other player, is sharing the ice with one of the legends of the franchise, a player whose number has been retired. This is likely the first and last time they’ll play a game together both wearing Stars colors. Neither is particularly talkative about it. But both the 20-year-old and...