The Chill can wrap up the championship with a victory Sunday in Chicago.
Chicago dominated the first game in Thursday's match, winning 25-17, but the Chill came back to win the next three games 27-25, 25-22 and 28-26.
Tyra Harper led the Chill with 16.5 points, including 11 kills, 2.5 blocks and 3 aces. Nicole Branagh added 15 points, which included 14 kills and 1 block. Mary Coleman had 15 points, including 11 kills, 2 blocks and 2 aces. Lindsey Berg had 47 assists and 1 ace.
Kristee Porter led Chicago with 16.5 points, including 12 kills. Kelly Kennedy added 10.5 points, including 6.5 blocks. Terri Zemaitis-Boumans chipped in with 11 points, 6 kills and 4 blocks.
If the Chill don't win Sunday, the series will shift to Rochester for the fifth and deciding match Wednesday at Mayo Civic Auditorium.
