Mamelodi Sundowns coach Miguel Cardoso knows the Club World Cup will be a huge test of his side's credentials and said Monday making it out of the group stage would be "an incredible achievement" as they prepare for their opening game.

Striker Iqraam Rayners scored the only goal of the match as South Africa’s Mamelodi Sundowns downed South Korean club Ulsan 1-0 to open their Club World Cup account with a victory. The win has also increased Masandawana’s financial purse.

Iqraam Rayners scored from point-blank range in the 36th minute to give Mamelodi Sundowns a 1-0 win over Ulsan HD after an hour-long weather delay in the group stage of the Club World Cup on Tuesday night.