Philadelphia Union (20-8-6, first in the Eastern Conference during the regular season) vs. Chicago Fire (15-11-8, seventh in the Conference during the regular season) Chicago; Saturday, 5:30 p.m. EDT BETMGM SPORTSBOOK LINE: Chicago +110, Philadelphia +214; over/under is 3.5 goals BOTTOM LINE: The Chicago Fire host the Philadelphia Union in the Eastern Conference finals. The Fire are 12-9-7 against Eastern Conference teams. The Fire are 1-5-1 when they score a single goal.