Columbus Crew have drawn level on points with Chicago Fire after beating them 2-1 at home.
Eddie Gaven gave the hosts the lead after nine minutes with a low right-footed shot from outside the box.
Gaven then turned provider for Emilio Renteria to double Columus' advantage minutes before half time.
Chicago grabbed a consolation goal from the head of Austin Berry, who rose highest to meet Dan Paladini's 72nd-minute corner.