Kaka scored twice in Orlando City's 4-1 victory over the 10-man Montreal Impact on Wednesday night.
Brek Shea and Carlos Rivas also scored for Orlando City.
Didier Drogba scored for Montreal, but the Impact were reduced to 10 men when goalkeeper Evan Bush was shown a straight red card in the 51st minute after taking down a streaking Rivas in the box. Kaka scored on backup goalkeeper Eric Kronberg on the ensuing penalty.
Drogba scored from a free kick 1:01 into the match, the second-fastest goal in Montreal's MLS history.