These teams twice in the month of May of this season. Philadelphia recorded 1-0 wins on the 11th and the 18th,
Bakary Soumare is in his second stint with the Fire. He spent nearly a year with the Union before being traded to Chicago earlier this season. Interestingly, three of the four appearances he made for the Zolos were against Chicago
In nine all-time meetings betwwen these sides, Philadelphia has won five times, Chicago three, with one draw shared.
Philadelphia's Sebastien Le Toux leads MLS in assists, with nine.
Union striker Jack McInerney represented Major League Soccer in the 3-1 All-Star Game loss to Italian giant AS Roma, entering the match as a second-half sub.