Brad Guzan kept a clean sheet on his return to Chicago, with Aston Villa beating the Fire thanks to an Abonlahor header.
In the first half Gabriel Agbonlahor powered a header home for the opening goal after muscling aside Arne Friedrich.
In perhaps the only lasting storyline from a sluggish friendly marked by copious amounts of substitutions, the goalscorer was stretchered off midway through the second half with an apparent knee problem.
Late in the second half U.S. international goalkeeper Brad Guzan was given a cursory run-out in his hometown of Chicago. The game took place in Bridgeview, Ill.'s Toyota Park.
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