Robert Lewandowski scored two goals, including the winner, in his home debut for the Fire, helping Chicago beat Charlotte FC 2-1 on Saturday at Soldier Field.
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Lewandowski, who made the move from FC Barcelona in a two-year deal with the Fire, equalized in the 20th minute off a screamer from outside the box that tied the game at 1.
He connected on his second goal of the night in the 68th minute with a go-ahead shot to the bottom-left corner to seal the win for the Fire (9-6-2), who played their first home match in more than two months.
Pep Biel gave Charlotte (7-7-4) an early lead with a shot from the right side of the box on an assist from Idan Toklomati.
Charlotte pushed for an equalizer late and earned a corner in stoppage time, but the Fire held on to preserve the one-goal lead.
Charlotte entered the match unbeaten in its last two games but dropped its third straight against the Fire.
The Fire visit Club Necaxa in Leagues Cup group stage play Thursday.
Racing Louisville 2, Chicago Stars 1
Former Ohio State teammates Mirann Gacioch, Kayla Fischer and Emma Sears combined to power Racing Louisville over the visiting Stars.
Gacioch scored her first NWSL goal in the 55th minute before Sears assisted Fischer’s goal just seven minutes later. The trio helped the Buckeyes reach four NCAA Tournaments during their collegiate careers.
Makenna Morris lofted free kick that found Arin Wright, whose pass set up Gacioch for a header against former Racing goalkeeper Katie Atkinson. Atkinson left Louisville in December after setting the club record with 305 saves.
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Louisville doubled its lead in the 61st minute when Sears found Fischer for her fourth goal of the season and Sears’ fourth assist.
The Stars (4-13-0) pulled one back in the 80th minute when Nádia Gomes capitalized after goalkeeper Jordyn Bloomer misjudged a routine shot.