There are too many unknowns in Chicago right now, so we are going with the Union, who have been among the most consistent MLS sides in the regular season.
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Data Analysis
Our analysis of all available data, including recent performances and player stats up until an hour before kickoff, suggested the most likely outcome of this match was a Philadelphia Union win with a probability of 47.11%. A win for Chicago Fire had a probability of 28.16% and a draw had a probability of 24.7%.
The most likely scoreline for a Philadelphia Union win was 1-0 with a probability of 9.89%. The next most likely scorelines for that outcome were 2-1 (9.37%) and 2-0 (7.93%). The likeliest Chicago Fire win was 0-1 (7.3%), while for a drawn scoreline it was 1-1 (11.69%). The actual scoreline of 2-2 was predicted with a 5.5% likelihood.