New York Red Bulls defeated DC United thanks to Kaku's long-range effort, while Seattle Sounders extended their winning streak to seven games.
Alejandro Romero Gamarra – better known as Kaku – was the hero as his thunderous second-half effort lifted the high-flying Red Bulls past DC 1-0 in MLS on Sunday.
Wayne Rooney's DC had gone five matches without defeat to move into play-off contention but that changed at Red Bull Arena, where the former Manchester United and England captain almost scored from a free-kick in the ninth minute.
DC enjoyed some great opportunities to make the breakthrough before half-time – Oniel Fisher's header sailing over the crossbar from point-blank range.