1st tiebreaker is regulation/overtime wins (ROW).
2d tiebreaker is points in head to head games.
3d tiebreaker is goal differential.
Blues vs. Detroit:
Blues likely win ROW but latest spate of Blues SO wins make it closer (34-34 now)
Detroit leads 6-4 with one game left
Detroit leads +48 to +33 Bottom line: Blues probably win tiebreaker unless they keep winning in shootouts, then very likely Detroit.
Blues vs. Nashville:
Nashville likely win ROW as they trail by 4pts but only 1 ROW (34-33 now)
Nashville has clinched head to head (9-4 with one game left). Bottom line: Predators probably win tiebreaker unless they catch up via shootout wins.
Blues vs. Vancouver: (1 vs. 2 potential)
Very likely Blues as they lead 34-33 in ROW but trail points 87-83.
Blues have clinched head to head, 5-2 with one game left Bottom line: Blues almost certainly win tiebreaker.