Cape Town - Mauricio Pochettino it is key for Tottenham that they keep Son Heung-min on top form after he scored their winning goal in the 1-0 victory over CSKA Moscow in the Champions League.
Spurs had to wait until the 71st-minute to break the deadlock, Son ran onto an Erik Lamela through ball and the South Korean poked the ball under Igor Akinfeev.
It was to be the only goal of the game in a game Pochettino's men dominated and Son has now scored five goals in his last five matches for the north London outfit.
"I think it is key," Pochettino said of Son's recent good form.
"It is very important that not only Harry, who was good before his injury and scored, that now another player has scored and that is very important for the team.
"I feel very pleased for Sonny. He is on fire and to keep this form is very important for us."
Son was pushed into a central attacking role in the second half after originally starting out on the left and the move paid dividends for Pochettino.
"We tried to find more mobility in our offensive position," Pochettino said.
"It is for that reason we changed Vincent for Nkoudou, to have more pace down the sides.
"First touch we find the link and it was fantastic the goal. Sometimes when you change, it goes well and sometimes no."