Real Madrid boss Jose Mourinho has said that Kaka was "spectacular" following the club's 4-1 win over CSKA Moscow in the Champions League last night.
Madrid, who were held to a 1-1 draw in the first leg last month, put four goals past their opponents at the Santiago Bernabeu, with Kaka assisting Gonzalo Higuain for the opening strike.
"[Kaka] had a spectacular match," he said. "He had his best games at AC Milan, but he has never worked harder than now.
"He does fantastic work for the team and it is normal that he does not have enough strength in his legs after 75 minutes."
Meanwhile, Mourinho refused to comment on whom the club would like to face in the next round of the competition.