Rusnak quickly sent the ball back to Kreilach, whose shot from outside the box found up the back of the net with the help of a slight deflection to beat Crepeau.
Javain Brown regained possession on the right side of the field and sent a teasing cross in front of goal where Whitecaps debutant Brian White was waiting from within the six yard box.
The Whitecaps maintained this momentum, looking the more likely of the two teams to find a go-ahead goal.